[Hackers Suspected of Using Anthropic Mythos to Breach GitHub, Copilot Source Code Fully Compromised] According to monitoring by Beating and disclosed by the SlowMist security team, the latest revelations on a cybercrime forum suggest that attackers may have used Anthropic's security AI model 'Mythos' to precisely penetrate GitHub's internal defenses. Among the approximately 4,000 internal GitHub repositories stolen are the Copilot source code, CodeQL algorithms, Actions runtime, and billing system code. The SlowMist team warns that if hackers conduct in-depth analysis of these codes, it could have subsequent security implications for the open-source community. The reason is simple: these systems underpin the core workflows of a vast number of developers. [Original Link]