Vals AI uses Claude Code to debug failures in an agent trace at their office in San Francisco, Feb. 12, 2026. A.I. has uncovered a horde of software flaws, which engineers are racing to fix before they can be exploited and abused by hackers. (Manuel Orbegozo/The New York Times) By KATE CONGER On Oct. 21, Fouad Matin, who leads OpenAI’s cyber-preparedness and safety efforts, had planned to spend the evening with friends to celebrate his birthday. Instead, he was running on about two hours of…