Google said a large language model it developed to find vulnerabilities recently discovered a bug that hackers were preparing to use. Late last year, Google announced an AI agent called Big Sleep — a project that evolved out of work on vulnerability research assisted by large language models done by  Google Project Zero and Google DeepMind. The tool actively searches and finds unknown security vulnerabilities in software. On Tuesday, Google said Big Sleep managed to discover CVE-2025-6965 — a ...