# Security Improvements Checklist

**Current Status**: Basic security implemented, several gaps identified  
**Target**: Production-ready security standards  
**Priority**: 🟡 Medium - Important for production deployment

---

## 🔐 Authentication Security

### Rate Limiting Implementation

**Impact**: Prevent brute force attacks  
**Current**: No rate limiting on auth endpoints  
**Priority**: 🟡 Medium

- [ ] **Install rate limiting middleware (`express-rate-limit` or similar)**
- [ ] **Add rate limiting to `/api/auth/login` (5 attempts/5min)**
- [ ] **Add rate limiting to `/api/auth/register` (3 attempts/hour)**
- [ ] **Add rate limiting to `/api/auth/refresh` (10 attempts/5min)**
- [ ] **Implement progressive delays for repeated failures**
- [ ] **Add IP-based and user-based rate limiting**

```typescript
// ADD TO lib/rate-limit.ts:
import rateLimit from 'express-rate-limit'

export const authRateLimit = rateLimit({
  windowMs: 5 * 60 * 1000, // 5 minutes
  max: 5, // 5 attempts per window
  message: { error: 'Too many login attempts, try again later' },
  standardHeaders: true,
  legacyHeaders: false,
})
```

### Password Security Enhancement

**Impact**: Stronger password requirements  
**Current**: Only 6 character minimum  
**Priority**: 🟡 Medium

- [ ] **Update password validation schema in `models/user.ts`**
- [ ] **Require minimum 8 characters**
- [ ] **Require at least one uppercase letter**
- [ ] **Require at least one number**
- [ ] **Require at least one special character**
- [ ] **Add password strength indicator in UI**
- [ ] **Implement password history (prevent reuse)**

```typescript
// UPDATE models/user.ts:
const passwordSchema = z
  .string()
  .min(8, 'Password must be at least 8 characters')
  .regex(/[A-Z]/, 'Password must contain at least one uppercase letter')
  .regex(/[0-9]/, 'Password must contain at least one number')
  .regex(/[^A-Za-z0-9]/, 'Password must contain at least one special character')
```

### Email Verification System

**Impact**: Prevent fake account creation  
**Current**: No email verification  
**Priority**: 🟡 Medium

- [ ] **Create email verification token system**
- [ ] **Add `emailVerified` and `verificationToken` fields to user model**
- [ ] **Create `/api/auth/verify-email` endpoint**
- [ ] **Create `/api/auth/resend-verification` endpoint**
- [ ] **Block unverified users from protected actions**
- [ ] **Set up email service (SendGrid, AWS SES, etc.)**
- [ ] **Create email templates for verification**

---

## 🛡️ API Security

### Environment Variables Security

**Impact**: Secure sensitive configuration  
**Current**: Default secrets in code  
**Priority**: 🟡 Medium

- [ ] **Remove default JWT secrets from code**
- [ ] **Add environment validation in `lib/env.ts`**
- [ ] **Require strong secrets in production**
- [ ] **Add secret rotation documentation**
- [ ] **Use key management service for production**

```typescript
// CREATE lib/env.ts:
const JWT_SECRET = process.env.JWT_SECRET
if (!JWT_SECRET || JWT_SECRET.length < 32) {
  throw new Error('JWT_SECRET must be at least 32 characters long')
}

if (process.env.NODE_ENV === 'production') {
  if (JWT_SECRET.includes('change-in-production')) {
    throw new Error('Must change default JWT secrets in production')
  }
}
```

### Request Validation Enhancement

**Impact**: Prevent malicious input  
**Current**: Basic Zod validation  
**Priority**: 🟡 Medium

- [ ] **Add request size limits**
- [ ] **Implement input sanitization middleware**
- [ ] **Add CORS configuration**
- [ ] **Validate content-type headers**
- [ ] **Add request ID tracking for audit logs**

```typescript
// ADD TO lib/security-middleware.ts:
export const securityMiddleware = {
  requestSizeLimit: '1mb',
  cors: {
    origin: process.env.ALLOWED_ORIGINS?.split(',') || ['http://localhost:4023'],
    credentials: true,
  },
  contentTypeValidation: ['application/json'],
}
```

---

## 🔒 Session Security

### Session Configuration Hardening

**Impact**: Secure session management  
**Current**: Basic session config  
**Priority**: 🟡 Medium

- [ ] **Review and harden session configuration in `lib/session.ts`**
- [ ] **Add session rotation on privilege escalation**
- [ ] **Implement session timeout warnings**
- [ ] **Add concurrent session limits**
- [ ] **Log session activities for audit**

### Cookie Security Enhancement

**Impact**: Prevent cookie-based attacks  
**Current**: Basic HTTP-only cookies  
**Priority**: 🟡 Medium

- [ ] **Add `Secure` flag enforcement in production**
- [ ] **Review `SameSite` configuration**
- [ ] **Add cookie integrity checking**
- [ ] **Implement cookie rotation**
- [ ] **Add domain restriction in production**

---

## 📊 Monitoring & Logging

### Security Logging Implementation

**Impact**: Detect and track security events  
**Current**: Basic console logging  
**Priority**: 🟡 Medium

- [ ] **Implement structured security logging**
- [ ] **Log failed authentication attempts**
- [ ] **Log privilege escalations**
- [ ] **Log sensitive data access**
- [ ] **Set up log aggregation and alerting**
- [ ] **Implement audit trail for user actions**

```typescript
// CREATE lib/security-logger.ts:
export const securityLog = {
  authFailure: (email: string, ip: string, reason: string) => {
    console.log(
      JSON.stringify({
        event: 'AUTH_FAILURE',
        email,
        ip,
        reason,
        timestamp: new Date().toISOString(),
      })
    )
  },
  // ... other security events
}
```

### Vulnerability Monitoring

**Impact**: Proactive security management  
**Current**: No vulnerability monitoring  
**Priority**: 🟡 Medium

- [ ] **Set up dependency vulnerability scanning**
- [ ] **Add `npm audit` to CI/CD pipeline**
- [ ] **Configure Snyk or similar tool**
- [ ] **Set up security headers monitoring**
- [ ] **Implement uptime and security monitoring**

---

## 🧪 Security Testing

### Penetration Testing Checklist

**Priority**: 🟡 Medium

- [ ] **Test SQL injection resistance**
- [ ] **Test XSS prevention**
- [ ] **Test CSRF protection**
- [ ] **Test authentication bypass attempts**
- [ ] **Test authorization bypass attempts**
- [ ] **Test session fixation attacks**
- [ ] **Test rate limiting effectiveness**

### Security Headers Validation

**Priority**: 🟡 Medium

- [ ] **Add Content Security Policy (CSP)**
- [ ] **Add X-Frame-Options header**
- [ ] **Add X-Content-Type-Options header**
- [ ] **Add Referrer-Policy header**
- [ ] **Add Permissions-Policy header**
- [ ] **Test headers with security scanning tools**

```typescript
// ADD TO next.config.js:
const securityHeaders = [
  {
    key: 'Content-Security-Policy',
    value: "default-src 'self'; script-src 'self' 'unsafe-eval'; style-src 'self' 'unsafe-inline';",
  },
  {
    key: 'X-Frame-Options',
    value: 'DENY',
  },
  // ... other headers
]
```

---

## 📈 Compliance & Standards

### OWASP Top 10 Compliance

**Priority**: 🟡 Medium

- [ ] **Review against OWASP Top 10 2021**
- [ ] **Implement broken access control prevention**
- [ ] **Add cryptographic failures protection**
- [ ] **Prevent injection attacks**
- [ ] **Secure design principles implementation**
- [ ] **Security misconfiguration prevention**
- [ ] **Vulnerable components identification**
- [ ] **Authentication failures prevention**
- [ ] **Software integrity failures prevention**
- [ ] **Logging and monitoring improvements**

---

## 🚀 Implementation Timeline

### Phase 1 (Immediate - Production Blockers)

- [ ] **Environment variables security**
- [ ] **Basic rate limiting**
- [ ] **Security headers**

### Phase 2 (Short Term - 2-4 weeks)

- [ ] **Password security enhancement**
- [ ] **Email verification system**
- [ ] **Security logging**

### Phase 3 (Long Term - 1-3 months)

- [ ] **Comprehensive monitoring**
- [ ] **Advanced threat protection**
- [ ] **Compliance auditing**

---

**Status**: ⏳ Pending Implementation  
**Owner**: Development Team  
**Security Review**: Required before production deployment  
**Compliance Check**: Annual security audit recommended