Security Awareness Lens

When reviewing or writing code, check for:

Input Handling

• [ ] User input validated before use
• [ ] SQL uses parameterized queries (never string concat)
• [ ] HTML output escaped to prevent XSS
• [ ] File paths validated (no path traversal)

Authentication/Authorization

• [ ] Auth checks at controller level, not just UI
• [ ] Sensitive operations re-verify permissions
• [ ] Session tokens are httpOnly, secure, sameSite

Data Exposure

• [ ] Logs don't contain secrets, tokens, PII
• [ ] Error messages don't leak internal details
• [ ] API responses don't include unnecessary fields

Secrets

• [ ] No hardcoded credentials
• [ ] Secrets from environment/vault, not config files
• [ ] .gitignore covers .env, credentials

See @owasp-quick-ref.md for detailed vulnerability patterns.