security-review

name	security-review
description	Use when security review checklist for diffs touching auth, authorization, input handling, secrets, uploads, payments, PII, dependencies, CORS, or unsafe HTML. Use only when security-sensitive code or configuration changed.

Security Review Skill

Adapted from ECC's security-review skill (MIT).

This skill ensures all code follows security best practices and identifies potential vulnerabilities.

When to Activate

• Implementing authentication or authorization
• Handling user input or file uploads
• Creating new API endpoints
• Working with secrets or credentials
• Implementing payment features
• Storing or transmitting sensitive data
• Integrating third-party APIs

See REFERENCE.md for full security checklist with code examples (secrets, input validation, SQL injection, auth, XSS, CSRF, rate limiting, data exposure, blockchain, dependencies) and security testing patterns.

Pre-Deployment Security Checklist

Before ANY production deployment:

• Secrets: No hardcoded secrets, all in env vars
• Input Validation: All user inputs validated
• SQL Injection: All queries parameterized
• XSS: User content sanitized
• CSRF: Protection enabled
• Authentication: Proper token handling
• Authorization: Role checks in place
• Rate Limiting: Enabled on all endpoints
• HTTPS: Enforced in production
• Security Headers: CSP, X-Frame-Options configured
• Error Handling: No sensitive data in errors
• Logging: No sensitive data logged
• Dependencies: Up to date, no vulnerabilities
• Row Level Security: Enabled in Supabase
• CORS: Properly configured
• File Uploads: Validated (size, type)
• Wallet Signatures: Verified (if blockchain)

Resources

• OWASP Top 10
• Next.js Security
• Supabase Security
• Web Security Academy

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Remember: Security is not optional. One vulnerability can compromise the entire platform. When in doubt, err on the side of caution.