---

name: security-lens description: Apply security awareness during code review and implementation. Catches common vulnerabilities without requiring full security audit. allowed-tools:

• Read
• Grep
• Glob

---

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.