Scrapers Take Down GitHub: December 11 Outage Timeline
On December 11, 2025, GitHub experienced intermittent disruptions that frustrated users across the globe. Developers everywhere started seeing random errors, 503s, unicorns, and CI pipeline failures. Very quickly it became clear something was wrong, even though GitHub’s status page still said ALL SYSTEMS OPERATIONAL. After the incident was over, GitHub published a postmortem that revealed the cause: scrapers. Automated tools hit GitHub with enough traffic to overwhelm key backend systems.