OpenSSF

Researchers led by Georgia Tech released OSS-CRS, a locally deployable framework for running and combining AIxCC cyber reasoning systems, noting that all seven open-sourced finalist systems depended on competition cloud infrastructure that no longer exists. Porting the winning Atlantis system, they found 10 previously unknown bugs (three high severity) in 8 OSS-Fuzz projects; OpenSSF welcomed OSS-CRS into its AI/ML Security Working Group in April 2026.

DARPA reports that seven finalist cyber reasoning systems analyzed over 54 million lines of code, found 54 unique synthetic vulnerabilities in 63 challenges and patched 43, and found 18 real non-synthetic vulnerabilities with 11 patches. Team Atlanta won $4 million, Trail of Bits $3 million and Theori $1.5 million; DARPA and ARPA-H added $1.4 million for real-world integration and four systems were open-sourced on the day.

At Black Hat USA 2023, DARPA announced the AI Cyber Challenge (AIxCC), a two-year competition to build AI-driven systems that automatically find and fix vulnerabilities in critical open-source software. Anthropic, Google, Microsoft and OpenAI agreed to provide technology and expertise to competitors, OpenSSF served as challenge advisor, and semifinal and final rounds were scheduled for DEF CON 2024 and 2025.