GitHub Hardens the Copilot Reviewer: Firewalls, Custom Setups and On-Demand Security Reviews Ship in One Week
In a single week GitHub put Copilot's automated code reviewer behind a firewall with custom setup steps and independent runners, taught it to read instructions from the head branch, and shipped an on-demand /security-review to the Copilot app — turning the agent that writes code into one that audits it.