GitHub Copilot CLI: AI Security Scan for Code Changes

GitHub Copilot CLI now includes a new experimental feature called /security-review. This command brings AI-driven vulnerability scanning directly into the terminal for the first time. It scans a developer's current code changes, identifies high-impact vulnerabilities, and offers fix suggestions without leaving the command line. This tool operates independently of existing GitHub security tools and even works in air-gapped environments. What's interesting is that this new command uses LLM-based inference for detection, moving away from the rule-based pattern matching of traditional static analysis tools. These older tools often have a high rate of false positives. By filtering for only high-confidence results, GitHub aims to reduce this "noise" problem. Independent research shows that combining LLM reasoning with static analysis can significantly cut down on false positives. This matters because catching vulnerabilities early makes software development faster and more secure.