How to use GitHub Copilot safely?

Treat every Copilot suggestion as untrusted input that requires security review. Enable GitHub Advanced Security and Copilot code scanning to catch common issues. Never accept suggestions that handle authentication, authorization, cryptography, or database queries without careful review. Use Copilot for boilerplate and UI code where security impact is lower, and write security-critical code manually. Set up pre-commit hooks that scan for secrets and common vulnerability patterns. Run automated security testing on every pull request. UNPWNED provides deployment-level scanning that catches vulnerabilities that code-level tools miss, like missing security headers and misconfigured hosting.