Does GitHub Copilot introduce vulnerabilities?

Yes, Copilot frequently suggests code patterns that contain security flaws. Common vulnerabilities include hardcoded credentials, missing input validation, SQL injection via string concatenation, insecure random number generation, and disabled SSL verification. Because Copilot is trained on public GitHub repositories, it reproduces insecure patterns it has seen in training data. Developers who accept suggestions without review propagate these vulnerabilities into production. GitHub has introduced Copilot code scanning features but these catch only a fraction of potential issues. UNPWNED provides comprehensive scanning that detects vulnerabilities regardless of whether they were written by AI or humans.