# Copper Tone Technologies - Audit Process Guide

**Version:** 1.0.0
**Last Updated:** 2025-11-20
**Purpose:** Complete instructions for auditing the Copper Tone Technologies codebase

---

## Table of Contents

1. [Overview](#overview)
2. [Prerequisites](#prerequisites)
3. [Automated Security Scanning](#automated-security-scanning)
4. [Database Audit Process](#database-audit-process)
5. [Backend Services Audit Process](#backend-services-audit-process)
6. [Frontend Application Audit Process](#frontend-application-audit-process)
7. [Infrastructure & DevOps Audit Process](#infrastructure--devops-audit-process)
8. [Security Audit Process (OWASP Top 10)](#security-audit-process-owasp-top-10)
9. [Code Quality Analysis](#code-quality-analysis)
10. [Compliance Verification](#compliance-verification)
11. [Report Generation](#report-generation)
12. [Audit Checklist](#audit-checklist)

---

## Overview

This document provides complete, step-by-step instructions for performing a comprehensive security and code quality audit of the Copper Tone Technologies platform. Follow these instructions sequentially to ensure no aspect of the codebase is overlooked.

### Audit Frequency
- **Security Audit:** Every 3 months or after major changes
- **Dependency Audit:** Monthly
- **Code Quality Audit:** Quarterly
- **Compliance Audit:** Annually or before major releases

### Time Estimates
- **Full Comprehensive Audit:** 4-6 hours
- **Security-Only Audit:** 2-3 hours
- **Dependency Scan:** 15-30 minutes
- **Code Quality Review:** 2-3 hours

---

## Prerequisites

### Required Tools
- Podman or Docker (for containerized scans)
- Git access to repository
- Go 1.25+ (for local testing)
- Node.js 20+ (for local testing)
- Access to production environment variables (.env file)

### Required Access
- Read access to all source code
- Access to CI/CD pipelines
- Access to production configuration (for comparison)
- Database schema access

### Setup
```bash
# Clone the repository
cd /home/administrator/projects/coppertone.tech

# Ensure you're on the latest version
git checkout main
git pull origin main

# Create audit output directory
mkdir -p docs/audits/$(date +%Y%m%d-%H%M%S)
export AUDIT_DIR=docs/audits/$(date +%Y%m%d-%H%M%S)
```

---

## Automated Security Scanning

### 1. NPM Dependency Audit (Frontend)

**Purpose:** Scan all frontend JavaScript/TypeScript dependencies for known vulnerabilities.

**Process:**
```bash
# Navigate to frontend directory
cd /home/administrator/projects/coppertone.tech/frontend

# Run npm audit in container (recommended)
podman run --rm -v .:/app:z -w /app node:20-alpine npm audit --json > $AUDIT_DIR/npm-audit.json

# Or run locally
npm audit --json > $AUDIT_DIR/npm-audit.json
npm audit --production --json > $AUDIT_DIR/npm-audit-prod.json

# Review results
cat $AUDIT_DIR/npm-audit.json | jq '.vulnerabilities'
```

**What to Check:**
- ✅ Total vulnerability count (should be 0)
- ✅ Critical vulnerabilities (must be 0)
- ✅ High vulnerabilities (should be 0)
- ✅ Moderate vulnerabilities (review and assess)
- ✅ Production vs. dev dependencies (production is priority)

**Acceptance Criteria:**
- Zero critical vulnerabilities
- Zero high vulnerabilities
- All moderate vulnerabilities documented with remediation plan

**Documentation:**
Record in audit report:
- Total dependencies scanned
- Vulnerability breakdown by severity
- Any vulnerabilities found and their status
- Upgrade recommendations

---

### 2. Go Module Verification (Backend)

**Purpose:** Verify integrity of all Go dependencies and check for known vulnerabilities.

**Process:**
```bash
cd /home/administrator/projects/coppertone.tech

# Verify all backend services
for service in auth-service work-management-service payment-service; do
    echo "=== Auditing $service ==="
    cd backend/functions/$service

    # Verify module checksums
    go mod verify > $AUDIT_DIR/go-verify-$service.txt 2>&1

    # Tidy dependencies
    go mod tidy

    # Run static analysis
    go vet ./... > $AUDIT_DIR/go-vet-$service.txt 2>&1

    # Check for vulnerabilities (requires govulncheck)
    go install golang.org/x/vuln/cmd/govulncheck@latest
    govulncheck ./... > $AUDIT_DIR/govulncheck-$service.txt 2>&1

    cd ../../..
done
```

**What to Check:**
- ✅ All modules verify successfully
- ✅ No modified dependencies
- ✅ No known CVEs in dependencies
- ✅ go vet reports no issues
- ✅ All dependencies are up-to-date

**Key Dependencies to Verify:**
- `golang.org/x/crypto` - Should be latest patch version
- `github.com/golang-jwt/jwt` - Should be v5.2.1+
- `github.com/ethereum/go-ethereum` - Should be v1.14+
- `github.com/stripe/stripe-go` - Should be v81+
- `github.com/lib/pq` - PostgreSQL driver should be latest

**Acceptance Criteria:**
- All modules verify without errors
- Zero known vulnerabilities
- go vet passes cleanly

**Documentation:**
Record in audit report:
- Module verification status for each service
- Dependency versions
- Any vulnerabilities found
- Upgrade recommendations

---

### 3. Container Security Scan

**Purpose:** Scan container images for vulnerabilities in base images and layers.

**Process:**
```bash
cd /home/administrator/projects/coppertone.tech

# Install trivy if not already installed
# See: https://aquasecurity.github.io/trivy/

# Build all container images
podman-compose build

# Scan each image
for image in coppertone-frontend coppertone-auth-service coppertone-work-management-service coppertone-payment-service; do
    echo "=== Scanning $image ==="
    trivy image $image:latest --format json > $AUDIT_DIR/trivy-$image.json
    trivy image $image:latest --severity HIGH,CRITICAL
done
```

**What to Check:**
- ✅ Base image vulnerabilities
- ✅ Installed package vulnerabilities
- ✅ Critical CVEs (must be 0)
- ✅ High severity issues
- ✅ Outdated base images

**Acceptance Criteria:**
- Zero critical vulnerabilities
- All high vulnerabilities documented
- Base images are current versions

**Documentation:**
Record in audit report:
- Images scanned
- Vulnerabilities by severity
- Base image versions
- Remediation actions

---

### 4. Static Code Analysis (Optional)

**Purpose:** Additional code quality and security analysis.

**Process:**
```bash
# Go static analysis with golangci-lint (if available)
for service in auth-service work-management-service payment-service; do
    cd backend/functions/$service
    golangci-lint run --out-format json > $AUDIT_DIR/golangci-$service.json 2>&1
    cd ../../..
done

# Frontend linting
cd frontend
npm run lint > $AUDIT_DIR/eslint-report.txt 2>&1
npm run type-check > $AUDIT_DIR/typescript-check.txt 2>&1
```

**Acceptance Criteria:**
- Linter passes or documented exceptions
- Type checking passes
- No security-related warnings

---

## Database Audit Process

### Purpose
Audit database schema, migrations, security, and data integrity.

### Files to Audit
```bash
# List all migration files
ls -la backend/migrations/

# Files to review:
- 001_create_users_and_identities.up.sql
- 001_create_users_and_identities.down.sql
- 002_create_projects_and_tasks.up.sql
- 002_create_projects_and_tasks.down.sql
- 003_create_invoices_and_payments.up.sql
- 003_create_invoices_and_payments.down.sql
```

### Audit Checklist

#### 1. SQL Injection Protection

**Prompt:** Review all backend Go files for SQL queries. Verify EVERY query uses parameterized statements.

**Process:**
```bash
# Search for all database queries
cd /home/administrator/projects/coppertone.tech
grep -r "db.Query\|db.Exec\|db.QueryRow" backend/functions/*/main.go --color -A 2

# Check for string concatenation in queries (BAD)
grep -r "fmt.Sprintf.*SELECT\|fmt.Sprintf.*INSERT\|fmt.Sprintf.*UPDATE\|fmt.Sprintf.*DELETE" backend/functions/ || echo "✅ No string concatenation in SQL"
```

**What to Look For:**
- ❌ BAD: `db.Query("SELECT * FROM users WHERE id = " + userId)`
- ❌ BAD: `db.Query(fmt.Sprintf("SELECT * FROM users WHERE id = %s", id))`
- ✅ GOOD: `db.Query("SELECT * FROM users WHERE id = $1", userId)`

**For Each Query Found:**
1. Verify it uses `$1, $2, $3...` placeholders (PostgreSQL)
2. Verify user input is passed as parameters, not concatenated
3. Check that the query cannot be manipulated by user input

**Acceptance Criteria:**
- 100% of queries use parameterized statements
- Zero string concatenation in SQL queries
- All user input properly escaped by database driver

**Documentation Template:**
```
### SQL Injection Audit Results

**Files Audited:**
- backend/functions/auth-service/main.go
- backend/functions/work-management-service/main.go
- backend/functions/payment-service/main.go

**Total Queries Found:** [NUMBER]
**Parameterized Queries:** [NUMBER] (should be 100%)
**Vulnerable Queries:** [NUMBER] (should be 0)

**Sample Secure Queries:**
[Paste 2-3 examples]

**Result:** ✅ PASS / ❌ FAIL
```

---

#### 2. Schema Security Review

**Prompt:** Audit database schema for security best practices.

**Process:**
```bash
# Review each migration file
for file in backend/migrations/*.up.sql; do
    echo "=== Auditing $file ==="
    cat "$file"
done
```

**Checklist for Each Table:**

**Users Table:**
- [ ] Email field is nullable (supports blockchain-only users)
- [ ] Email has UNIQUE constraint
- [ ] Email index exists for performance
- [ ] No plaintext passwords stored
- [ ] created_at and updated_at timestamps present
- [ ] Proper foreign key constraints

**Identities Table:**
- [ ] Supports multiple auth methods (email_password, blockchain_address, did)
- [ ] credential field is TEXT (stores hashed passwords)
- [ ] UNIQUE constraint on (type, identifier)
- [ ] Foreign key to users with ON DELETE CASCADE
- [ ] Indexes on user_id and (type, identifier)

**User Roles Table:**
- [ ] Role is ENUM type (prevents invalid roles)
- [ ] UNIQUE constraint on (user_id, role)
- [ ] Foreign key to users with ON DELETE CASCADE
- [ ] Index on user_id

**Projects/Tasks Tables:**
- [ ] Foreign keys to users and clients
- [ ] Status fields use ENUM or VARCHAR with constraints
- [ ] IPFS CID fields for document storage
- [ ] Proper indexes on frequently queried fields
- [ ] ON DELETE rules appropriate (CASCADE, SET NULL, or RESTRICT)

**Invoices/Payments Tables:**
- [ ] Monetary amounts use NUMERIC(12,2) (not FLOAT)
- [ ] Currency field present
- [ ] Status tracking via ENUM
- [ ] blockchain_tx_hash fields for crypto payments
- [ ] ipfs_document_cid for immutable invoice storage
- [ ] Proper foreign keys and indexes

**General Security:**
- [ ] No sensitive data in plain text
- [ ] Proper data types (no VARCHAR for everything)
- [ ] Constraints prevent invalid data
- [ ] Indexes on all foreign keys
- [ ] Triggers for automatic timestamp updates
- [ ] No default passwords or test data in migrations

**Acceptance Criteria:**
- All tables follow normalization (3NF minimum)
- All foreign keys have indexes
- All sensitive data properly protected
- Proper use of constraints and data types

**Documentation Template:**
```
### Database Schema Audit Results

**Tables Audited:** [NUMBER]
**Total Columns:** [NUMBER]
**Foreign Keys:** [NUMBER]
**Indexes:** [NUMBER]
**Constraints:** [NUMBER]

**Security Features:**
- Password hashing: ✅ bcrypt in credential field
- Email privacy: ✅ Nullable for blockchain-only users
- Data integrity: ✅ Foreign keys with ON DELETE CASCADE
- Financial precision: ✅ NUMERIC(12,2) for amounts
- Audit trail: ✅ created_at/updated_at on all tables

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

#### 3. Database Connection Security

**Prompt:** Verify database connections use secure settings.

**Process:**
```bash
# Check database connection strings in all services
grep -r "sslmode" backend/functions/*/main.go
grep -r "connStr" backend/functions/*/main.go -A 1
```

**What to Check:**

**Development vs. Production:**
- ⚠️ `sslmode=disable` - Acceptable for local development
- ✅ `sslmode=require` - Required for production
- ✅ `sslmode=verify-full` - Best for production with certificate verification

**Connection String Security:**
```go
// Check for this pattern:
connStr := fmt.Sprintf("user=%s password=%s dbname=%s host=%s sslmode=disable", ...)

// For production, should be:
connStr := fmt.Sprintf("user=%s password=%s dbname=%s host=%s sslmode=require", ...)
```

**Environment Variables:**
- [ ] DB_USER from environment (not hardcoded)
- [ ] DB_PASSWORD from environment (not hardcoded)
- [ ] DB_NAME from environment
- [ ] DB_HOST from environment
- [ ] No credentials in source code
- [ ] No credentials in git history

**Acceptance Criteria:**
- Development: sslmode can be disable
- Production: Must use sslmode=require or verify-full
- All credentials from environment variables
- No plaintext passwords in code

**Documentation Template:**
```
### Database Connection Security Audit

**Services Audited:**
- auth-service: [sslmode setting]
- work-management-service: [sslmode setting]
- payment-service: [sslmode setting]

**Environment Variable Usage:**
- DB credentials: ✅ From environment / ❌ Hardcoded
- SSL setting: ✅ Configurable / ❌ Fixed

**Production Readiness:**
- Current setting: sslmode=[VALUE]
- Required for production: sslmode=require
- Action needed: [YES/NO]

**Result:** ✅ PASS / ⚠️ NEEDS CONFIGURATION
```

---

#### 4. Migration Safety Review

**Prompt:** Verify migrations can be safely applied and rolled back.

**Process:**
```bash
# Check that every .up.sql has a corresponding .down.sql
cd backend/migrations
for up in *.up.sql; do
    down="${up/up.sql/down.sql}"
    if [ ! -f "$down" ]; then
        echo "❌ Missing down migration for $up"
    else
        echo "✅ $up has corresponding $down"
    fi
done
```

**What to Check:**

**For Each Migration Pair:**
1. `.up.sql` creates tables/columns
2. `.down.sql` drops tables/columns in reverse order
3. Down migration properly handles dependencies (foreign keys first)
4. No data loss in down migrations (or documented)

**Migration Naming:**
- [ ] Sequential numbering (001, 002, 003)
- [ ] Descriptive names
- [ ] Timestamp or version included

**Migration Content:**
- [ ] `CREATE TABLE IF NOT EXISTS` (idempotent)
- [ ] Proper DROP order in down migrations
- [ ] No DROP CASCADE unless intentional
- [ ] Comments explaining complex migrations

**Acceptance Criteria:**
- Every up migration has a down migration
- Migrations are idempotent where possible
- Down migrations properly reverse changes
- No data loss without documentation

**Documentation Template:**
```
### Database Migration Audit

**Total Migrations:** [NUMBER]
**Up Migrations:** [NUMBER]
**Down Migrations:** [NUMBER]
**Migration Pairs Complete:** ✅ YES / ❌ NO

**Migration Files:**
1. 001_create_users_and_identities (✅ up/down pair)
2. 002_create_projects_and_tasks (✅ up/down pair)
3. 003_create_invoices_and_payments (✅ up/down pair)

**Safety Features:**
- IF NOT EXISTS checks: ✅ Present
- Proper DROP order: ✅ Verified
- Foreign key handling: ✅ Correct
- Rollback safety: ✅ Safe

**Result:** ✅ PASS / ❌ FAIL
```

---

## Backend Services Audit Process

### Purpose
Audit all Go microservices for security, code quality, and best practices.

### Services to Audit
1. Auth Service (`backend/functions/auth-service/main.go`)
2. Work Management Service (`backend/functions/work-management-service/main.go`)
3. Payment Service (`backend/functions/payment-service/main.go`)
4. IPFS Client (if applicable)

---

### 1. Authentication & Authorization Audit

**Prompt:** Verify all authentication mechanisms are secure and properly implemented.

**Process:**

#### Auth Service Specific Checks

```bash
cd /home/administrator/projects/coppertone.tech/backend/functions/auth-service
grep -n "bcrypt\|jwt\|ethereum" main.go
```

**Password Hashing:**
```bash
# Find password hashing implementation
grep -A 10 "GenerateFromPassword\|CompareHashAndPassword" main.go
```

**Check:**
- [ ] Uses bcrypt (not MD5, SHA1, or plain)
- [ ] bcrypt cost is 10 or higher
- [ ] Passwords never logged or returned in responses
- [ ] Password comparison uses constant-time comparison (bcrypt.CompareHashAndPassword)

**Example Secure Implementation:**
```go
// ✅ GOOD
passwordHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)

// Check cost
const cost = 10 // Should be >= 10
```

**JWT Token Security:**
```bash
# Find JWT implementation
grep -A 20 "jwt.New\|jwt.Sign\|jwt.Parse" main.go
```

**Check:**
- [ ] JWT secret from environment variable (not hardcoded)
- [ ] JWT secret is at least 32 characters (preferably 64+)
- [ ] Token expiration time set (not indefinite)
- [ ] Signing algorithm is HS256, RS256, or ES256 (not "none")
- [ ] Claims include user ID, roles, and expiration
- [ ] Token validation on protected routes

**Example Secure Implementation:**
```go
// ✅ GOOD - Secret from environment
jwtSecret := []byte(os.Getenv("JWT_SECRET"))
if len(jwtSecret) == 0 {
    log.Fatal("JWT_SECRET must be set")
}

// ✅ GOOD - Token with expiration
token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
    "user_id": user.ID,
    "exp":     time.Now().Add(24 * time.Hour).Unix(),
    "roles":   roles,
})
```

**Blockchain Authentication:**
```bash
# Find Ethereum signature verification
grep -A 15 "verifyEthereumSignature\|crypto.Ecrecover" main.go
```

**Check:**
- [ ] Uses official go-ethereum library
- [ ] Signature verification before authentication
- [ ] Address normalization (lowercase)
- [ ] Message signing prevents replay attacks
- [ ] Nonce or timestamp included in signed message

**Acceptance Criteria:**
- Passwords hashed with bcrypt cost >= 10
- JWT secret from environment, 64+ characters
- Token expiration implemented
- Ethereum signatures properly verified
- No authentication bypass vulnerabilities

**Documentation Template:**
```
### Authentication Audit Results

**Password Security:**
- Hashing algorithm: bcrypt
- Cost factor: [NUMBER]
- Constant-time comparison: ✅ YES / ❌ NO

**JWT Security:**
- Secret source: ✅ Environment variable / ❌ Hardcoded
- Secret length: [NUMBER] characters
- Expiration: ✅ Implemented / ❌ Missing
- Signing algorithm: [ALGORITHM]

**Blockchain Authentication:**
- Library: go-ethereum v[VERSION]
- Signature verification: ✅ Implemented / ❌ Missing
- Replay protection: ✅ YES / ❌ NO

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

#### RBAC (Role-Based Access Control) Audit

**Prompt:** Verify role-based access control is properly enforced.

**Process:**
```bash
# Find RBAC middleware
grep -A 20 "requireRole\|checkRole" backend/functions/*/main.go
```

**What to Check:**

**Role Definition:**
- [ ] Roles defined as ENUM in database or constants in code
- [ ] Valid roles: ADMIN, STAFF, CLIENT (or similar)
- [ ] No hardcoded role checks scattered throughout code
- [ ] Centralized role validation

**Middleware Implementation:**
```go
// Example pattern to find:
func requireRole(handler http.HandlerFunc, allowedRoles ...string) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        // Extract user from context
        // Check if user has required role
        // Allow or deny access
    }
}
```

**Check:**
- [ ] Role verification happens in middleware (not in handlers)
- [ ] User roles extracted from JWT claims
- [ ] Default deny (if no role matches, deny access)
- [ ] All protected endpoints use requireRole middleware

**Protected Endpoints:**
```bash
# Find all protected routes
grep -n "http.HandleFunc\|http.Handle" backend/functions/*/main.go
```

**For Each Endpoint, Verify:**
- Public endpoints (register, login, healthz): No authentication needed
- Protected endpoints: Wrapped with authenticate() middleware
- Admin endpoints: Wrapped with requireRole("ADMIN")
- Client endpoints: Wrapped with requireRole("CLIENT", "STAFF", "ADMIN")

**Example Secure Implementation:**
```go
// ✅ GOOD - Protected with RBAC
http.HandleFunc("/admin/users", authenticate(requireRole(handleAdminUsers, "ADMIN")))
http.HandleFunc("/projects", authenticate(requireRole(handleProjects, "CLIENT", "STAFF", "ADMIN")))

// ✅ GOOD - Public endpoint
http.HandleFunc("/register", handleRegister)
http.HandleFunc("/healthz", handleHealth)
```

**Acceptance Criteria:**
- All protected endpoints wrapped with authentication
- Admin endpoints require ADMIN role
- RBAC enforced via middleware (not scattered checks)
- Default deny policy

**Documentation Template:**
```
### RBAC Audit Results

**Services Audited:**
- auth-service: [NUMBER] endpoints
- work-management-service: [NUMBER] endpoints
- payment-service: [NUMBER] endpoints

**Endpoint Classification:**
- Public endpoints: [NUMBER]
- Authenticated endpoints: [NUMBER]
- Role-protected endpoints: [NUMBER]

**RBAC Implementation:**
- Middleware-based: ✅ YES / ❌ NO
- Centralized validation: ✅ YES / ❌ NO
- Default deny: ✅ YES / ❌ NO

**Sample Protected Endpoints:**
[List 3-5 examples with their required roles]

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 2. Input Validation Audit

**Prompt:** Verify all user input is validated before use.

**Process:**
```bash
# Find all HTTP handlers
grep -n "func handle" backend/functions/*/main.go

# For each handler, check for input validation
```

**What to Validate:**

**Email Addresses:**
- [ ] Format validation (regex or library)
- [ ] Length limits (max 255 characters)
- [ ] Normalization (lowercase)
- [ ] No SQL injection characters if used in queries

**Passwords:**
- [ ] Minimum length (recommend 8+ characters)
- [ ] Maximum length (prevent DOS, recommend 100)
- [ ] No whitespace-only passwords
- [ ] Complexity requirements (optional but recommended)

**User Names:**
- [ ] Length limits
- [ ] Allowed characters (alphanumeric, spaces, hyphens)
- [ ] XSS prevention (though Vue handles this)

**Numeric IDs:**
- [ ] Type validation (int, not string)
- [ ] Range validation (positive numbers)
- [ ] No negative IDs

**Blockchain Addresses:**
- [ ] Format validation (0x + 40 hex characters)
- [ ] Checksum validation
- [ ] Normalization (lowercase)

**Amounts/Currency:**
- [ ] Positive numbers only (or explicit negative handling)
- [ ] Maximum amount limits
- [ ] Decimal precision (2 digits for currency)

**Example Validation Patterns:**
```go
// ✅ GOOD - Email validation
if req.Email == "" {
    http.Error(w, "Email is required", http.StatusBadRequest)
    return
}
if len(req.Email) > 255 {
    http.Error(w, "Email too long", http.StatusBadRequest)
    return
}

// ✅ GOOD - Password validation
if len(req.Password) < 8 {
    http.Error(w, "Password must be at least 8 characters", http.StatusBadRequest)
    return
}

// ✅ GOOD - Role validation
validRoles := map[string]bool{"ADMIN": true, "STAFF": true, "CLIENT": true}
if !validRoles[req.Role] {
    http.Error(w, "Invalid role", http.StatusBadRequest)
    return
}

// ✅ GOOD - Amount validation
if req.Amount <= 0 {
    http.Error(w, "Amount must be positive", http.StatusBadRequest)
    return
}
```

**Acceptance Criteria:**
- All user input validated before use
- Appropriate error messages (not exposing internal details)
- Length limits on all string inputs
- Type validation on all inputs
- No unvalidated input reaches database

**Documentation Template:**
```
### Input Validation Audit Results

**Handlers Audited:** [NUMBER]

**Validation Coverage:**
- Email addresses: ✅ Validated / ❌ Missing
- Passwords: ✅ Validated / ❌ Missing
- Numeric IDs: ✅ Validated / ❌ Missing
- Blockchain addresses: ✅ Validated / ❌ Missing
- Amounts: ✅ Validated / ❌ Missing

**Security Features:**
- Length limits: ✅ Enforced / ❌ Missing
- Type checking: ✅ Present / ❌ Missing
- Range validation: ✅ Present / ❌ Missing
- Enum validation: ✅ Present / ❌ Missing

**Weaknesses Found:**
[List any missing validations]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 3. Error Handling & Logging Audit

**Prompt:** Verify error handling doesn't leak sensitive information and logging is appropriate.

**Process:**
```bash
# Find error handling patterns
grep -n "http.Error\|log.Print\|fmt.Print" backend/functions/*/main.go
```

**Error Handling Check:**

**Client-Facing Errors (http.Error):**
- [ ] Generic messages (not exposing stack traces)
- [ ] No database error details exposed
- [ ] No file system paths exposed
- [ ] Appropriate status codes

**Examples:**
```go
// ❌ BAD - Exposes internal details
http.Error(w, fmt.Sprintf("Database error: %v", err), 500)

// ✅ GOOD - Generic message
http.Error(w, "Internal server error", http.StatusInternalServerError)
log.Printf("Database error in handleUsers: %v", err) // Server-side logging
```

**Server-Side Logging:**
- [ ] Errors logged with context
- [ ] No passwords or secrets in logs
- [ ] No credit card numbers in logs
- [ ] User IDs included for tracking
- [ ] Timestamp included (automatic with log package)

**Examples:**
```go
// ✅ GOOD - Detailed server-side logging
log.Printf("Failed to hash password for user %s: %v", email, err)
log.Printf("Database connection failed: %v", err)
log.Printf("JWT verification failed for token: %v", err)

// ❌ BAD - Logging sensitive data
log.Printf("User password: %s", password) // Never log passwords
log.Printf("JWT secret: %s", jwtSecret)   // Never log secrets
```

**Authentication Logging:**
- [ ] Successful logins logged (user ID, timestamp)
- [ ] Failed login attempts logged (email, IP, timestamp)
- [ ] Account creation logged
- [ ] Role changes logged

**Acceptance Criteria:**
- Client errors are generic and safe
- Server logs provide debugging details
- No sensitive data in logs
- Authentication events logged

**Documentation Template:**
```
### Error Handling & Logging Audit

**Error Handling:**
- Generic client errors: ✅ YES / ❌ NO
- Detailed server logs: ✅ YES / ❌ NO
- Appropriate status codes: ✅ YES / ❌ NO

**Logging Coverage:**
- Authentication events: ✅ Logged / ❌ Missing
- Database errors: ✅ Logged / ❌ Missing
- Validation failures: ✅ Logged / ❌ Missing

**Security:**
- Passwords in logs: ❌ NO / ⚠️ YES (CRITICAL)
- Secrets in logs: ❌ NO / ⚠️ YES (CRITICAL)
- Stack traces to client: ❌ NO / ⚠️ YES (BAD)

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 4. CORS Configuration Audit

**Prompt:** Verify CORS is properly configured for security.

**Process:**
```bash
# Find CORS middleware
grep -A 15 "corsMiddleware\|CORS\|Access-Control" backend/functions/*/main.go
```

**What to Check:**

**CORS Headers:**
```go
// Find this pattern:
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
```

**Development vs. Production:**
- ⚠️ `Access-Control-Allow-Origin: *` - OK for development
- ✅ `Access-Control-Allow-Origin: https://coppertone.tech` - Required for production
- ✅ Environment-based configuration

**Security Checks:**
- [ ] Origin validation (not wildcard in production)
- [ ] Methods limited to necessary ones
- [ ] Headers limited to necessary ones (Content-Type, Authorization)
- [ ] Credentials handling if needed
- [ ] Preflight (OPTIONS) requests handled

**Example Secure Implementation:**
```go
// ✅ GOOD - Environment-based CORS
func corsMiddleware(next http.Handler) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        allowedOrigin := os.Getenv("ALLOWED_ORIGIN")
        if allowedOrigin == "" {
            allowedOrigin = "*" // Development fallback
        }
        w.Header().Set("Access-Control-Allow-Origin", allowedOrigin)
        w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
        w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")

        if r.Method == "OPTIONS" {
            w.WriteHeader(http.StatusOK)
            return
        }

        next.ServeHTTP(w, r)
    })
}
```

**Acceptance Criteria:**
- CORS middleware applied to all services
- Wildcard origin acceptable for development only
- Production should use specific origins
- OPTIONS requests handled properly

**Documentation Template:**
```
### CORS Audit Results

**Services Audited:**
- auth-service: [CORS config]
- work-management-service: [CORS config]
- payment-service: [CORS config]

**Current Configuration:**
- Allow-Origin: [VALUE]
- Allow-Methods: [LIST]
- Allow-Headers: [LIST]
- Allow-Credentials: [YES/NO]

**Environment Awareness:**
- Configurable via env: ✅ YES / ❌ NO
- Production-ready: ✅ YES / ⚠️ NEEDS CONFIGURATION

**Recommendations:**
- Development: Current config OK
- Production: [REQUIRED CHANGES]

**Result:** ✅ PASS / ⚠️ NEEDS PRODUCTION CONFIG
```

---

### 5. Third-Party Integration Audit

**Prompt:** Audit integrations with external services (Stripe, IPFS, Ethereum).

#### Stripe Integration (Payment Service)

**Process:**
```bash
cd backend/functions/payment-service
grep -n "stripe\|STRIPE" main.go
```

**What to Check:**

**API Key Security:**
```go
// Find this pattern:
stripeKey := os.Getenv("STRIPE_SECRET_KEY")
stripe.Key = stripeKey
```

**Check:**
- [ ] API key from environment (not hardcoded)
- [ ] Using secret key (sk_), not publishable key (pk_)
- [ ] Test vs. production keys appropriately used
- [ ] API version explicitly set (recommended)

**Webhook Security:**
```bash
# Find webhook handler
grep -A 20 "webhook\|Webhook" backend/functions/payment-service/main.go
```

**Check:**
- [ ] Webhook signature verification implemented
- [ ] Webhook secret from environment
- [ ] Event type validation
- [ ] Idempotency handling

**Example Secure Implementation:**
```go
// ✅ GOOD - Signature verification
event, err := stripe.ConstructEvent(body, signature, webhookSecret)
if err != nil {
    http.Error(w, "Invalid signature", http.StatusBadRequest)
    return
}
```

**Payment Intent Security:**
- [ ] Amount validation before creation
- [ ] Currency validation
- [ ] Idempotency keys used
- [ ] Customer ID verified
- [ ] Error handling for failed payments

**Acceptance Criteria:**
- API keys from environment
- Webhook signatures verified
- Proper error handling
- Idempotency implemented

#### IPFS Integration

**Process:**
```bash
grep -rn "ipfs\|IPFS\|CID" backend/functions/
```

**Check:**
- [ ] IPFS client configured via environment
- [ ] CID validation before storage
- [ ] Error handling for upload/download failures
- [ ] No sensitive data uploaded without encryption
- [ ] Gateway URL configurable

#### Ethereum Integration (Auth Service)

**Process:**
```bash
cd backend/functions/auth-service
grep -n "ethereum\|crypto.Ecrecover" main.go
```

**Check:**
- [ ] Official go-ethereum library used
- [ ] Signature verification implemented
- [ ] Address validation
- [ ] No private key storage or handling
- [ ] Message signing for anti-replay

**Documentation Template:**
```
### Third-Party Integration Audit

**Stripe:**
- API key security: ✅ Environment variable / ❌ Hardcoded
- Webhook verification: ✅ Implemented / ❌ Missing / ⚠️ Placeholder
- Idempotency: ✅ Implemented / ❌ Missing
- Error handling: ✅ Comprehensive / ❌ Missing

**IPFS:**
- Configuration: ✅ Environment-based / ❌ Hardcoded
- CID validation: ✅ Present / ❌ Missing
- Error handling: ✅ Present / ❌ Missing

**Ethereum:**
- Library: go-ethereum v[VERSION]
- Signature verification: ✅ Implemented / ❌ Missing
- Security: ✅ No private key handling / ⚠️ Check needed

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

## Frontend Application Audit Process

### Purpose
Audit Vue.js frontend for security, code quality, and best practices.

### Files to Audit
- `frontend/src/stores/*.ts` (Pinia stores)
- `frontend/src/views/*.vue` (View components)
- `frontend/src/components/*.vue` (Reusable components)
- `frontend/src/router/index.ts` (Router configuration)
- `frontend/src/App.vue` (Root component)

---

### 1. XSS (Cross-Site Scripting) Prevention

**Prompt:** Verify the frontend properly escapes user input and doesn't inject raw HTML.

**Process:**
```bash
cd /home/administrator/projects/coppertone.tech/frontend

# Search for v-html (dangerous)
grep -rn "v-html" src/

# Search for innerHTML (dangerous)
grep -rn "innerHTML" src/

# Search for eval (dangerous)
grep -rn "eval(" src/
```

**What to Check:**

**Vue Template Safety:**
- [ ] No `v-html` usage (or justified and sanitized)
- [ ] All user input rendered with `{{ }}` (automatic escaping)
- [ ] No `innerHTML` manipulation
- [ ] No `eval()` or `Function()` usage

**Safe Patterns:**
```vue
<!-- ✅ GOOD - Automatic escaping -->
<div>{{ userInput }}</div>
<div :title="userInput"></div>

<!-- ❌ BAD - Raw HTML injection -->
<div v-html="userInput"></div>

<!-- ⚠️ CONDITIONAL - OK if sanitized -->
<div v-html="sanitizedHTML"></div>
```

**Attribute Binding Safety:**
```vue
<!-- ✅ GOOD - Vue handles escaping -->
<a :href="sanitizedUrl">Link</a>
<img :src="imageUrl" :alt="description">

<!-- ❌ BAD - Direct URL from user without validation -->
<a :href="userInput">Link</a>
```

**JavaScript Context:**
```typescript
// ❌ BAD - Don't use eval
eval(userInput);
new Function(userInput)();

// ✅ GOOD - Use JSON.parse for data
const data = JSON.parse(userInput);
```

**Acceptance Criteria:**
- Zero usage of v-html (or all instances justified and sanitized)
- No eval() or Function() usage
- All user input properly escaped
- URL sanitization where applicable

**Documentation Template:**
```
### XSS Prevention Audit

**Files Scanned:** [NUMBER]
**Templates Checked:** [NUMBER]

**Dangerous Patterns Found:**
- v-html usage: [NUMBER] (should be 0 or justified)
- innerHTML usage: [NUMBER] (should be 0)
- eval() usage: [NUMBER] (should be 0)

**Safe Patterns:**
- Automatic escaping ({{ }}): ✅ Used throughout
- Attribute binding: ✅ Properly escaped
- Event handlers: ✅ No inline code execution

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 2. Authentication State Management

**Prompt:** Audit authentication store for security best practices.

**Process:**
```bash
# Review auth store
cat frontend/src/stores/auth.ts
```

**What to Check:**

**Token Storage:**
- [ ] Where is token stored? (localStorage, sessionStorage, cookie)
- [ ] Token cleared on logout
- [ ] Token sent with API requests
- [ ] Token expiration handling

**Security Considerations:**
```typescript
// Current implementation check:
// - localStorage: Vulnerable to XSS but OK for SPAs
// - sessionStorage: Cleared on tab close
// - httpOnly cookie: Most secure but requires CORS setup
```

**Token Handling:**
```typescript
// ✅ GOOD - Token in Authorization header
headers: {
    'Authorization': `Bearer ${token}`
}

// ❌ BAD - Token in URL
fetch(`/api/data?token=${token}`)
```

**Login/Logout Flow:**
```typescript
// ✅ GOOD - Clear token on logout
async logout() {
    this.user = null
    this.token = null
    this.isAuthenticated = false
    localStorage.removeItem('token')
    router.push('/login')
}

// Check for:
// - Token cleared from storage
// - User state reset
// - Redirect to login
```

**Auto-Login/Session Restoration:**
```typescript
// Check for token validation on app load
// Should verify token is still valid, not just present
async checkAuth() {
    const token = localStorage.getItem('token')
    if (token) {
        // ✅ GOOD - Verify token with backend
        try {
            await this.fetchProfile()
        } catch {
            this.logout() // Clear invalid token
        }
    }
}
```

**Acceptance Criteria:**
- Token stored securely (localStorage acceptable)
- Token sent in Authorization header
- Token cleared on logout
- Invalid tokens handled gracefully
- No token in URLs

**Documentation Template:**
```
### Authentication State Audit

**Token Storage:**
- Location: [localStorage/sessionStorage/cookie]
- Cleared on logout: ✅ YES / ❌ NO
- Expiration handling: ✅ YES / ❌ NO

**API Communication:**
- Authorization header: ✅ YES / ❌ NO
- Token in URL: ❌ NO / ⚠️ YES (BAD)
- HTTPS required: ✅ Production / ❌ Not enforced

**Session Management:**
- Auto-login: ✅ Implemented / ❌ Missing
- Token validation: ✅ Verified with backend / ⚠️ Client-only
- Logout flow: ✅ Complete / ❌ Incomplete

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 3. Router Security (Navigation Guards)

**Prompt:** Verify protected routes require authentication.

**Process:**
```bash
cat frontend/src/router/index.ts
```

**What to Check:**

**Route Definitions:**
```typescript
// Look for meta.requiresAuth
{
    path: '/dashboard',
    component: DashboardView,
    meta: { requiresAuth: true } // ✅ GOOD
}

{
    path: '/admin',
    component: AdminView,
    meta: { requiresAuth: true, role: 'ADMIN' } // ✅ BETTER
}
```

**Navigation Guard:**
```typescript
// Should have global beforeEach guard
router.beforeEach((to, from, next) => {
    const authStore = useAuthStore()

    if (to.meta.requiresAuth && !authStore.isAuthenticated) {
        next('/login') // ✅ GOOD - Redirect to login
    } else {
        next()
    }
})
```

**Check for Each Protected Route:**
- [ ] `/dashboard` - Requires auth
- [ ] `/projects` - Requires auth
- [ ] `/projects/:id` - Requires auth
- [ ] `/invoices` - Requires auth
- [ ] `/admin/*` - Requires admin role

**Public Routes:**
- [ ] `/` (home) - Public
- [ ] `/login` - Public
- [ ] `/register` - Public
- [ ] `/about` - Public
- [ ] `/contact` - Public

**Role-Based Routing:**
```typescript
// ✅ GOOD - Check roles
router.beforeEach((to, from, next) => {
    const authStore = useAuthStore()

    if (to.meta.requiresAuth) {
        if (!authStore.isAuthenticated) {
            next('/login')
            return
        }

        if (to.meta.role && !authStore.hasRole(to.meta.role)) {
            next('/unauthorized')
            return
        }
    }

    next()
})
```

**Acceptance Criteria:**
- All protected routes have requiresAuth: true
- Navigation guard checks authentication
- Role-based routes check user roles
- Unauthenticated users redirected to login

**Documentation Template:**
```
### Router Security Audit

**Total Routes:** [NUMBER]
**Protected Routes:** [NUMBER]
**Public Routes:** [NUMBER]
**Admin Routes:** [NUMBER]

**Navigation Guards:**
- Global beforeEach: ✅ Implemented / ❌ Missing
- Authentication check: ✅ Present / ❌ Missing
- Role-based access: ✅ Implemented / ❌ Missing
- Redirect on unauthorized: ✅ YES / ❌ NO

**Route Protection:**
[List protected routes and their requirements]

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 4. API Communication Security

**Prompt:** Verify API calls use HTTPS and proper error handling.

**Process:**
```bash
# Check all API URLs
grep -rn "API_URL\|api\." frontend/src/stores/
```

**What to Check:**

**API URL Configuration:**
```typescript
// Check .env files and vite config
const API_URL = import.meta.env.VITE_AUTH_API_URL || 'http://localhost:8082'
```

**Check:**
- [ ] Environment variables for API URLs
- [ ] HTTPS in production (http acceptable for localhost)
- [ ] No hardcoded production URLs in code
- [ ] Fallback to localhost for development

**Example Secure Configuration:**
```typescript
// ✅ GOOD - Environment-based
const API_URL = import.meta.env.VITE_AUTH_API_URL

// .env.production should have:
// VITE_AUTH_API_URL=https://auth.coppertone.tech
// VITE_WORK_API_URL=https://work.coppertone.tech
// VITE_PAYMENT_API_URL=https://payment.coppertone.tech
```

**Error Handling:**
```typescript
// Check each API call
async fetchProjects() {
    try {
        const response = await fetch(`${API_URL}/projects`, {
            headers: { 'Authorization': `Bearer ${this.token}` }
        })

        if (!response.ok) {
            throw new Error('Failed to fetch projects')
        }

        this.projects = await response.json()
    } catch (err) {
        this.error = err.message // ✅ GOOD - User-friendly error
        console.error(err) // ✅ GOOD - Detailed error for debugging
    }
}
```

**Check for Each Store:**
- [ ] Error state (error ref)
- [ ] Loading state (loading ref)
- [ ] Try-catch around API calls
- [ ] User-friendly error messages
- [ ] Token included in requests

**Sensitive Data:**
- [ ] No passwords in API responses displayed
- [ ] No tokens logged to console
- [ ] No credit card numbers in frontend state

**Acceptance Criteria:**
- API URLs from environment variables
- HTTPS enforced in production
- Comprehensive error handling
- No sensitive data logged

**Documentation Template:**
```
### API Communication Audit

**API Endpoints:**
- Auth API: [URL]
- Work API: [URL]
- Payment API: [URL]
- IPFS API: [URL]

**Security:**
- HTTPS in production: ✅ YES / ❌ NO
- Environment-based URLs: ✅ YES / ❌ NO
- Token authentication: ✅ Present / ❌ Missing

**Error Handling:**
- Try-catch coverage: [PERCENTAGE]%
- User-friendly errors: ✅ YES / ❌ NO
- Error logging: ✅ Appropriate / ⚠️ Excessive

**Sensitive Data:**
- Passwords logged: ❌ NO / ⚠️ YES (CRITICAL)
- Tokens logged: ❌ NO / ⚠️ YES (CRITICAL)
- PII exposed: ❌ NO / ⚠️ YES

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 5. Form Input Sanitization

**Prompt:** Verify form inputs are validated before submission.

**Process:**
```bash
# Find all form components
find frontend/src -name "*.vue" -exec grep -l "form\|input" {} \;
```

**What to Check for Each Form:**

**Login Form:**
- [ ] Email validation (format)
- [ ] Password minimum length
- [ ] Required field validation
- [ ] Submit disabled while loading
- [ ] Error message display

**Registration Form:**
- [ ] Email validation
- [ ] Password strength indicator
- [ ] Password confirmation match
- [ ] Name validation
- [ ] Terms acceptance (if applicable)

**Payment Form:**
- [ ] Amount validation (positive, decimal)
- [ ] Currency validation
- [ ] Invoice selection validation
- [ ] Stripe Elements (handles card validation)

**Example Validation:**
```vue
<script setup lang="ts">
const email = ref('')
const emailError = ref('')

function validateEmail() {
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/
    if (!emailRegex.test(email.value)) {
        emailError.value = 'Please enter a valid email'
        return false
    }
    emailError.value = ''
    return true
}

async function handleSubmit() {
    if (!validateEmail()) {
        return
    }
    // ✅ Proceed with submission
}
</script>

<template>
    <form @submit.prevent="handleSubmit">
        <input v-model="email" type="email" required>
        <span v-if="emailError">{{ emailError }}</span>
        <button :disabled="loading">Submit</button>
    </form>
</template>
```

**Client-Side vs. Server-Side:**
- Client-side validation: UX improvement only
- ✅ Server-side validation: Security requirement (MUST HAVE)
- Never trust client-side validation alone

**Acceptance Criteria:**
- All forms have input validation
- Required fields marked
- Appropriate input types (email, number, etc.)
- Error messages displayed
- Understanding that server-side validation is primary

**Documentation Template:**
```
### Form Validation Audit

**Forms Audited:** [NUMBER]

**Validation Coverage:**
- Login form: ✅ Validated / ❌ Missing
- Registration form: ✅ Validated / ❌ Missing
- Payment forms: ✅ Validated / ❌ Missing
- Project/Task forms: ✅ Validated / ❌ Missing

**Validation Types:**
- Required fields: ✅ Enforced / ❌ Missing
- Format validation: ✅ Present / ❌ Missing
- Range validation: ✅ Present / ❌ Missing

**UX Features:**
- Error messages: ✅ User-friendly / ❌ Technical
- Loading states: ✅ Present / ❌ Missing
- Disabled buttons: ✅ While submitting / ❌ Always enabled

**Note:** Server-side validation verified: ✅ YES / ❌ NO

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

## Infrastructure & DevOps Audit Process

### Purpose
Audit container configurations, CI/CD pipelines, and deployment security.

---

### 1. Container Security Audit

**Prompt:** Audit all Containerfiles for security best practices.

**Process:**
```bash
# List all Containerfiles
find . -name "Containerfile" -o -name "Dockerfile"
```

**For Each Containerfile:**

**Base Image Security:**
```dockerfile
# Check first line
FROM golang:1.25-alpine

# ✅ GOOD - Specific version tag
# ❌ BAD - FROM golang:latest (unpredictable)
# ✅ GOOD - Alpine (minimal, 5MB)
# ⚠️ ACCEPTABLE - FROM golang:1.25 (Debian, larger)
```

**Check:**
- [ ] Specific version tags (not :latest)
- [ ] Minimal base images (alpine preferred)
- [ ] Official images from Docker Hub
- [ ] Regularly updated images

**Multi-Stage Builds:**
```dockerfile
# ✅ GOOD - Multi-stage build
FROM golang:1.25-alpine AS builder
# ... build steps ...

FROM alpine:latest
# ... runtime only ...
```

**Check:**
- [ ] Builder stage separate from runtime
- [ ] Only necessary artifacts copied to final image
- [ ] Build tools not in final image

**User Permissions:**
```dockerfile
# ✅ GOOD - Non-root user
RUN adduser -D -u 1000 appuser
USER appuser

# ❌ BAD - Running as root
USER root
```

**Check:**
- [ ] Non-root user created
- [ ] USER directive sets non-root user
- [ ] Files owned by non-root user
- [ ] No unnecessary privileges

**Secrets Management:**
```dockerfile
# ❌ BAD - Secrets in image
ENV JWT_SECRET=hardcoded_secret

# ✅ GOOD - Secrets at runtime
ENV JWT_SECRET=""
# Set at runtime via -e or Docker secrets
```

**Check:**
- [ ] No hardcoded secrets
- [ ] No API keys in ENV
- [ ] No passwords in image layers
- [ ] Secrets passed at runtime

**Installed Packages:**
```dockerfile
# ✅ GOOD - Minimal packages
RUN apk add --no-cache ca-certificates

# ⚠️ CHECK - Verify each package is necessary
RUN apk add curl wget vim nano
```

**Check:**
- [ ] Only necessary packages installed
- [ ] No debugging tools in production images
- [ ] Package versions pinned (optional but recommended)
- [ ] `--no-cache` used (smaller image)

**Acceptance Criteria:**
- Specific version tags
- Multi-stage builds for compiled languages
- Non-root users
- No secrets in images
- Minimal package installation

**Documentation Template:**
```
### Container Security Audit

**Containerfiles Audited:** [NUMBER]

**Base Images:**
[LIST each service and its base image]

**Security Features:**
- Version pinning: ✅ YES / ❌ NO
- Multi-stage builds: ✅ YES / ❌ NO / N/A
- Non-root users: ✅ YES / ❌ NO
- Minimal packages: ✅ YES / ❌ NO

**Secrets Management:**
- Hardcoded secrets: ❌ NO / ⚠️ YES (CRITICAL)
- Runtime secrets: ✅ YES / ❌ NO

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 2. CI/CD Pipeline Audit

**Prompt:** Audit Gitea Actions workflows for security and best practices.

**Process:**
```bash
# List all workflows
ls -la .gitea/workflows/
```

**Workflows to Audit:**
- `build-frontend.yml`
- `build-backend-auth.yml`
- `build-backend-work.yml`
- `build-backend-payment.yml`

**For Each Workflow:**

**Trigger Configuration:**
```yaml
on:
  push:
    branches: [ main, develop, 'feature/**' ]
    paths:
      - 'backend/functions/auth-service/**'
```

**Check:**
- [ ] Triggers on main/develop branches
- [ ] Path filters to avoid unnecessary runs
- [ ] Pull request triggers (if applicable)
- [ ] Manual workflow_dispatch (optional)

**Security Steps:**
```yaml
# ✅ GOOD - Dependency verification
- name: Verify dependencies
  run: go mod verify

# ✅ GOOD - Static analysis
- name: Run go vet
  run: go vet ./...

# ✅ GOOD - Tests before build
- name: Run tests
  run: go test -v ./...
```

**Check:**
- [ ] Dependency verification
- [ ] Static analysis (go vet, eslint)
- [ ] Unit tests run
- [ ] Tests must pass before build
- [ ] Security scanning (optional but recommended)

**Secrets Handling:**
```yaml
# ✅ GOOD - Using Gitea secrets
env:
  STRIPE_SECRET_KEY: ${{ secrets.STRIPE_SECRET_KEY }}

# ❌ BAD - Hardcoded secrets
env:
  STRIPE_SECRET_KEY: sk_test_1234567890
```

**Check:**
- [ ] No hardcoded secrets
- [ ] Secrets from Gitea secrets
- [ ] Production secrets separate from dev
- [ ] Secrets not logged

**Build Artifacts:**
```yaml
# Check if artifacts are saved
- name: Archive artifacts
  uses: actions/upload-artifact@v3
  with:
    name: coverage-report
    path: coverage.out
```

**Check:**
- [ ] Important artifacts saved (coverage, binaries)
- [ ] Artifacts retained appropriately
- [ ] No sensitive data in artifacts

**Acceptance Criteria:**
- All workflows run tests before building
- Static analysis included
- No hardcoded secrets
- Builds fail on test failures

**Documentation Template:**
```
### CI/CD Pipeline Audit

**Workflows Audited:** [NUMBER]

**Workflow Features:**
- Automated testing: ✅ YES / ❌ NO
- Static analysis: ✅ YES / ❌ NO
- Dependency checking: ✅ YES / ❌ NO
- Build on test pass: ✅ YES / ❌ NO

**Secrets Management:**
- Gitea secrets: ✅ Used / ❌ Not used
- Hardcoded secrets: ❌ NO / ⚠️ YES (CRITICAL)
- Secret logging: ❌ NO / ⚠️ YES (BAD)

**Branch Protection:**
- Main branch protected: ✅ YES / ❌ NO
- Tests required: ✅ YES / ❌ NO

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

### 3. Environment Configuration Audit

**Prompt:** Verify environment variable configuration is secure.

**Process:**
```bash
# Check .env.example
cat .env.example

# Check .gitignore
cat .gitignore | grep -i env

# Check for .env in git history
git log --all --full-history -- .env
```

**What to Check:**

**.env.example:**
- [ ] Contains all required variables
- [ ] No actual secrets (placeholder values)
- [ ] Comments explaining each variable
- [ ] Committed to repository

```bash
# ✅ GOOD .env.example
JWT_SECRET=CHANGE_THIS_TO_LONG_RANDOM_STRING
DB_PASSWORD=CHANGE_THIS_SECURE_PASSWORD
STRIPE_SECRET_KEY=sk_test_YOUR_KEY_HERE
```

**.gitignore:**
- [ ] .env files excluded
- [ ] .env.local excluded
- [ ] .env.production excluded
- [ ] No .env files in git history

```bash
# ✅ GOOD .gitignore
.env
.env.local
.env.production
.env.*.local
```

**Git History Check:**
```bash
# Should return nothing or show only .env.example
git log --all --full-history -- .env

# If .env was committed, it needs to be removed:
# git filter-branch --force --index-filter \
#   "git rm --cached --ignore-unmatch .env" \
#   --prune-empty --tag-name-filter cat -- --all
```

**podman-compose.yml:**
```yaml
# Check environment variable sources
services:
  auth-service:
    environment:
      JWT_SECRET: ${JWT_SECRET}  # ✅ GOOD - From .env
      DB_PASSWORD: ${DB_PASSWORD}
```

**Check:**
- [ ] Uses ${VAR} syntax (not hardcoded)
- [ ] All secrets from environment
- [ ] No default passwords

**Acceptance Criteria:**
- .env.example exists with placeholders
- .env excluded from git
- No secrets in git history
- podman-compose uses environment variables

**Documentation Template:**
```
### Environment Configuration Audit

**Configuration Files:**
- .env.example: ✅ Exists / ❌ Missing
- .gitignore excludes .env: ✅ YES / ❌ NO
- .env in git history: ❌ NO / ⚠️ YES (CRITICAL)

**Environment Variables:**
[List all required environment variables]

**Secret Management:**
- Placeholders in .env.example: ✅ YES / ❌ NO
- Real secrets in repo: ❌ NO / ⚠️ YES (CRITICAL)
- Production secrets documented: ✅ YES / ❌ NO

**Issues Found:** [LIST or "None"]

**Result:** ✅ PASS / ❌ FAIL
```

---

## Security Audit Process (OWASP Top 10)

### Purpose
Systematic review against OWASP Top 10 2021 vulnerabilities.

---

### A01:2021 – Broken Access Control

**Prompt:** Verify all protected resources require proper authentication and authorization.

**Manual Test Process:**

1. **List All Endpoints:**
```bash
# Backend endpoints
grep -rn "http.HandleFunc" backend/functions/*/main.go | awk '{print $2}'
```

2. **Classify Each Endpoint:**
- Public: register, login, healthz
- Authenticated: profile, projects, invoices
- Admin: admin routes, user management

3. **Verify Protection:**
For each authenticated endpoint:
```bash
# Check for authenticate middleware
grep -A 1 "http.HandleFunc.*profile" backend/functions/auth-service/main.go
# Should see: authenticate(handleProfile)
```

4. **Test Access Control:**
```bash
# Try accessing protected endpoint without token
curl http://localhost:8082/profile
# Should return 401 Unauthorized

# Try accessing admin endpoint as regular user
curl -H "Authorization: Bearer <regular_user_token>" http://localhost:8082/admin/users
# Should return 403 Forbidden
```

**Acceptance Criteria:**
- ✅ All protected endpoints wrapped with authenticate()
- ✅ Admin endpoints require ADMIN role
- ✅ Users cannot access others' resources
- ✅ Proper HTTP status codes (401, 403)

**Documentation Template:**
```
### A01 - Broken Access Control Audit

**Endpoints Audited:** [NUMBER]

**Classification:**
- Public endpoints: [NUMBER]
- Authenticated endpoints: [NUMBER]
- Admin endpoints: [NUMBER]

**Protection Verification:**
- Authentication middleware: ✅ Applied / ❌ Missing
- Role-based access: ✅ Implemented / ❌ Missing
- Resource ownership: ✅ Verified / ❌ Not checked

**Manual Testing:**
- Unauthenticated access blocked: ✅ YES / ❌ NO
- Cross-user access blocked: ✅ YES / ❌ NO
- Admin protection: ✅ YES / ❌ NO

**Result:** ✅ PASS / ❌ FAIL
```

---

### A02:2021 – Cryptographic Failures

**Prompt:** Verify sensitive data is properly encrypted and protected.

**Checklist:**

**Password Storage:**
```bash
# Find password hashing
grep -rn "bcrypt\|GenerateFromPassword" backend/functions/*/main.go
```

**Check:**
- [ ] bcrypt used (not MD5, SHA1, plain)
- [ ] Cost factor >= 10
- [ ] Password never logged
- [ ] Password never returned in API responses

**Data in Transit:**
```bash
# Check database connections
grep -rn "sslmode" backend/functions/*/main.go
```

**Check:**
- [ ] Database: sslmode=require for production
- [ ] API: HTTPS in production
- [ ] Frontend: HTTPS enforced

**Data at Rest:**
```bash
# Check database schema
cat backend/migrations/*.up.sql | grep -i password
```

**Check:**
- [ ] Passwords in `credential` field (hashed)
- [ ] No plaintext sensitive data
- [ ] Blockchain addresses (public data, OK to store)
- [ ] Credit card data (NOT stored, Stripe handles)

**JWT Tokens:**
```bash
# Check JWT implementation
grep -A 10 "jwt.NewWithClaims" backend/functions/auth-service/main.go
```

**Check:**
- [ ] Signing algorithm is HS256 or better
- [ ] Secret from environment (>= 32 chars)
- [ ] Expiration time set
- [ ] Contains minimal necessary data

**Acceptance Criteria:**
- ✅ Passwords hashed with bcrypt
- ✅ Database SSL configurable
- ✅ HTTPS in production
- ✅ No plaintext secrets

**Documentation Template:**
```
### A02 - Cryptographic Failures Audit

**Password Security:**
- Algorithm: bcrypt
- Cost: [NUMBER]
- Plaintext exposure: ❌ NO / ⚠️ YES (CRITICAL)

**Data in Transit:**
- Database SSL: ✅ sslmode=require / ⚠️ sslmode=disable
- API HTTPS: ✅ Enforced / ❌ Not enforced
- Frontend HTTPS: ✅ YES / ❌ NO

**Data at Rest:**
- Sensitive data encrypted: ✅ YES / ❌ NO
- Database encryption: ✅ YES / ⚠️ Platform-dependent

**JWT Security:**
- Algorithm: [HS256/RS256/etc]
- Secret length: [NUMBER] chars
- Expiration: ✅ Set / ❌ Missing

**Result:** ✅ PASS / ❌ FAIL
```

---

### A03:2021 – Injection

**Prompt:** Verify no injection vulnerabilities (SQL, command, etc.).

**Already covered in Database Audit section. Quick checklist:**

```bash
# Verify parameterized queries
grep -rn "db.Query\|db.Exec" backend/functions/*/main.go | grep -v "\$1"
# Should return nothing (all queries use $1, $2, etc.)
```

**Acceptance Criteria:**
- ✅ 100% parameterized SQL queries
- ✅ No command injection (no os.Exec with user input)
- ✅ No LDAP injection (not applicable)
- ✅ Frontend XSS protection (Vue escaping)

**Documentation:**
```
### A03 - Injection Audit

**SQL Injection:**
- Parameterized queries: 100%
- String concatenation: 0
- Result: ✅ PASS

**Command Injection:**
- os.Exec usage: [NUMBER]
- User input in commands: ❌ NO / ⚠️ YES
- Result: ✅ PASS / ❌ FAIL

**XSS (Frontend):**
- v-html usage: [NUMBER]
- Automatic escaping: ✅ YES
- Result: ✅ PASS

**Overall Result:** ✅ PASS / ❌ FAIL
```

---

### A04 through A10 – Continue Pattern

**For each remaining OWASP category:**

1. **Read the OWASP description** of the vulnerability
2. **Identify relevant code sections** in the codebase
3. **Create specific tests** for that vulnerability
4. **Document findings** with pass/fail

**Remaining Categories:**
- A04: Insecure Design
- A05: Security Misconfiguration
- A06: Vulnerable and Outdated Components
- A07: Identification and Authentication Failures
- A08: Software and Data Integrity Failures
- A09: Security Logging and Monitoring Failures
- A10: Server-Side Request Forgery (SSRF)

**Refer to the comprehensive audit report for examples of how to audit each category.**

---

## Code Quality Analysis

### Purpose
Assess code maintainability, readability, and adherence to best practices.

### Metrics to Collect

**Lines of Code:**
```bash
# Backend
find backend/functions -name "*.go" ! -name "*_test.go" -exec wc -l {} + | tail -1

# Frontend
find frontend/src -name "*.ts" -o -name "*.vue" | xargs wc -l | tail -1

# Database
wc -l backend/migrations/*.sql
```

**Cyclomatic Complexity:**
```bash
# Use gocyclo (install if needed)
go install github.com/fzipp/gocyclo/cmd/gocyclo@latest
gocyclo -over 15 backend/functions/
```

**Code Duplication:**
```bash
# Manual review or use tools like:
# - jscpd (for JavaScript/TypeScript)
# - dupl (for Go)
```

**Test Coverage:**
```bash
# Go coverage
cd backend/functions/auth-service
go test -coverprofile=coverage.out ./...
go tool cover -func=coverage.out
```

**Documentation:**
```bash
# Count comments in Go files
grep -r "^//" backend/functions/ | wc -l

# Check for godoc comments
grep -r "^// [A-Z]" backend/functions/*.go
```

**Documentation Template:**
```
### Code Quality Metrics

**Lines of Code:**
- Backend Go: [NUMBER]
- Frontend Vue/TS: [NUMBER]
- Database SQL: [NUMBER]
- Total: [NUMBER]

**Complexity:**
- Average cyclomatic complexity: [NUMBER]
- Functions > 15: [NUMBER] (should be 0)

**Code Duplication:**
- Duplicate blocks: [NUMBER]
- Duplication percentage: [PERCENTAGE]%

**Test Coverage:**
- auth-service: [PERCENTAGE]%
- work-management-service: [PERCENTAGE]%
- payment-service: [PERCENTAGE]%
- Frontend: [PERCENTAGE]%

**Documentation:**
- Inline comments: [NUMBER]
- Function documentation: [PERCENTAGE]%
- README completeness: ✅ Complete / ⚠️ Partial

**Issues Found:** [LIST]

**Overall Code Quality: [A/B/C/D/F]**
```

---

## Compliance Verification

### GDPR (if applicable to EU users)

**Checklist:**
- [ ] User data collected with consent
- [ ] Data minimization (only necessary data)
- [ ] Right to access (user can view their data)
- [ ] Right to erasure (user can delete their data)
- [ ] Data portability (user can export their data)
- [ ] Privacy policy present
- [ ] Data breach notification process
- [ ] Data encryption (at rest and in transit)

### PCI DSS (for payment processing)

**Checklist:**
- [ ] No card data stored (Stripe handles)
- [ ] PCI DSS Level 1 via Stripe
- [ ] Secure transmission (HTTPS)
- [ ] Access controls on payment systems
- [ ] Security monitoring and logging

### Other Compliance

**Accessibility (WCAG 2.1):**
- [ ] Keyboard navigation
- [ ] Screen reader compatibility
- [ ] Color contrast ratios
- [ ] Alt text for images
- [ ] Form labels

---

## Report Generation

### Audit Report Structure

Create a comprehensive audit report at:
```
docs/audits/YYYYMMDD-HHMMSS-audit-type.md
```

**Required Sections:**

1. **Executive Summary**
   - Overall score
   - Risk level
   - Production readiness
   - Critical findings

2. **Automated Scan Results**
   - NPM audit
   - Go module verification
   - Container scanning
   - Static analysis

3. **Manual Audit Findings**
   - Database security
   - Backend services
   - Frontend application
   - Infrastructure

4. **OWASP Top 10 Assessment**
   - Each category with PASS/FAIL
   - Evidence and examples

5. **Code Quality Metrics**
   - LOC, complexity, duplication
   - Test coverage
   - Documentation

6. **Findings Summary**
   - Critical issues (must fix)
   - High-priority issues
   - Medium-priority issues
   - Low-priority issues

7. **Recommendations**
   - Immediate actions
   - Short-term improvements
   - Long-term enhancements

8. **Appendices**
   - Files audited
   - Tools used
   - Methodology
   - Audit checklist

---

## Audit Checklist

### Pre-Audit
- [ ] Repository cloned and updated
- [ ] Environment configured
- [ ] Audit directory created
- [ ] Tools installed

### Automated Scans
- [ ] NPM audit completed
- [ ] Go module verification completed
- [ ] Container scanning completed
- [ ] Static analysis completed

### Database Audit
- [ ] SQL injection protection verified
- [ ] Schema security reviewed
- [ ] Connection security verified
- [ ] Migration safety checked

### Backend Audit
- [ ] Authentication security verified
- [ ] RBAC implementation checked
- [ ] Input validation reviewed
- [ ] Error handling assessed
- [ ] CORS configuration checked
- [ ] Third-party integrations reviewed

### Frontend Audit
- [ ] XSS prevention verified
- [ ] Authentication state secure
- [ ] Router guards checked
- [ ] API communication secure
- [ ] Form validation reviewed

### Infrastructure Audit
- [ ] Container security verified
- [ ] CI/CD pipelines checked
- [ ] Environment config reviewed

### Security Audit (OWASP)
- [ ] A01: Access Control
- [ ] A02: Cryptographic Failures
- [ ] A03: Injection
- [ ] A04: Insecure Design
- [ ] A05: Security Misconfiguration
- [ ] A06: Vulnerable Components
- [ ] A07: Authentication Failures
- [ ] A08: Data Integrity
- [ ] A09: Logging/Monitoring
- [ ] A10: SSRF

### Code Quality
- [ ] Metrics collected
- [ ] Test coverage assessed
- [ ] Documentation reviewed

### Compliance
- [ ] GDPR (if applicable)
- [ ] PCI DSS (payment processing)
- [ ] Accessibility (if required)

### Report
- [ ] Executive summary written
- [ ] All findings documented
- [ ] Recommendations provided
- [ ] Report saved to docs/audits/

### Post-Audit
- [ ] Report reviewed
- [ ] Critical issues communicated
- [ ] Remediation plan created
- [ ] Next audit scheduled

---

## Completion

**After completing this audit process:**

1. Save the final report to `docs/audits/[TIMESTAMP]-[TYPE]-audit.md`
2. Commit the audit report to git
3. Share findings with stakeholders
4. Create issues for each finding that needs remediation
5. Schedule follow-up audit (3 months or after major changes)

**Audit complete! ✅**