Harden-Runner: visibility into what your CI runner does on the network
Most teams have no idea what their CI runners connect to during a build. Packages get installed, scripts run, network calls go out — and none of it is logged. That is a real blind spot. Harden-Runner from StepSecurity is a GitHub Action that monitors and optionally blocks outbound network connections at the runner level, in real time. Think of it as an EDR for your CI pipeline. It caught the axios supply chain attack in real time — any connection to sfrclak....