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April 20, 2026 8 min readSecurity Analysis
Web Application Security Checklist for 2026
Web Application Security Checklist for 2026
Securing a modern web application requires a multi-layered approach. Use this checklist to evaluate your current security posture.
Authentication & Authorization
- [ ] Implement Multi-Factor Authentication (MFA).
- [ ] Ensure secure password storage using bcrypt or Argon2.
- [ ] Use JWTs securely (sign with a strong secret, set expiration).
- [ ] Regularly audit user permissions.
Data Protection
- [ ] Use TLS 1.3 for all communications.
- [ ] Encrypt sensitive database fields at rest.
- [ ] Implement proper Content Security Policy (CSP) headers.
Input Validation
- [ ] Validate all user input on the server side.
- [ ] Use parameterized queries for all database interactions.
- [ ] Sanitize data before rendering it in the UI to prevent XSS.
Logging & Monitoring
- [ ] Log all authentication attempts (success and failure).
- [ ] Monitor for unusual traffic patterns.
- [ ] Have a clear incident response plan.
Next Step for Engineering Teams
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