// lib/utils/cookies.ts
- ✅ HttpOnly cookies cho tokens (prevent XSS)
- ✅ Secure flag trong production (HTTPS only)
- ✅ SameSite=Strict (prevent CSRF)
- ✅ Proper expiration dates

// lib/utils/token-validation.ts
- ✅ JWT format validation
- ✅ Token expiration checking
- ✅ 5-minute buffer before expiration
- ✅ Automatic token refresh
- ✅ Secure token storage

// lib/utils/session.ts
- ✅ Session monitoring (5-minute intervals)
- ✅ Automatic logout on expiration
- ✅ Secure session cleanup
- ✅ Error handling for all edge cases

// lib/api/client.ts
- ✅ Environment-specific CORS headers
- ✅ Request/response interceptors
- ✅ Automatic token refresh
- ✅ Proper error handling

// lib/utils/error-handler.ts
- ✅ Sensitive data sanitization
- ✅ User-friendly error messages
- ✅ Development logging
- ✅ Retry mechanisms

// middleware.ts
- ✅ Server-side route protection
- ✅ Cookie-based authentication
- ✅ Automatic redirects

1. ✅ Form validation với real-time feedback
2. ✅ Email lowercase normalization
3. ✅ Password trimming
4. ✅ HTTPS-only cookies
5. ✅ Automatic token refresh
6. ✅ Secure logout

1. ✅ JWT token validation
2. ✅ Expiration checking with buffer
3. ✅ Automatic cleanup on errors
4. ✅ Background monitoring
5. ✅ Secure storage (localStorage + cookies)

1. ✅ No sensitive data exposure
2. ✅ User-friendly messages
3. ✅ Proper logging in development
4. ✅ Graceful degradation

# .env.production
NEXT_PUBLIC_API_BASE_URL=https://your-api-domain.com/api/v1
NEXT_PUBLIC_API_TIMEOUT=10000
NODE_ENV=production

const securityHeaders = [
  {
    key: 'X-DNS-Prefetch-Control',
    value: 'on'
  },
  {
    key: 'Strict-Transport-Security',
    value: 'max-age=63072000; includeSubDomains; preload'
  },
  {
    key: 'X-Frame-Options',
    value: 'DENY'
  },
  {
    key: 'X-Content-Type-Options',
    value: 'nosniff'
  },
  {
    key: 'Referrer-Policy',
    value: 'origin-when-cross-origin'
  }
];

• Secure cookie settings
• JWT token validation
• Session expiration handling
• CSRF protection (SameSite cookies)
• XSS protection (HttpOnly cookies)
• Error message sanitization
• Environment-specific configurations
• Automatic token refresh
• Route protection middleware
• Proper logout handling

• Rate limiting on login endpoint
• Account lockout after failed attempts
• Password strength validation
• Two-factor authentication
• Security audit logging
• Content Security Policy (CSP)
• HTTPS redirect
• API versioning
• Input validation on server-side
• Regular security updates

Access Token: 15-60 minutes
Refresh Token: 7-30 days
Session Check: 5 minutes
Expiration Buffer: 5 minutes

HttpOnly: true (for tokens)
Secure: true (production only)
SameSite: Strict
Path: /
Expires: 7 days

1. Token Compromise: Clear all sessions, force re-login
2. Session Hijacking: Implement token rotation
3. XSS Attack: Validate HttpOnly cookies are working
4. CSRF Attack: Check SameSite cookie settings
5. Brute Force: Implement rate limiting

• Failed login attempts
• Token refresh frequency
• Session duration analytics
• Error rate monitoring
• Security header compliance

For security issues, please contact the development team immediately.

Last Updated: $(date) Version: 1.0.0 Status: ✅ Production Ready