Security researchers spent 6 days doing their Chromework, built 1B user exploit

Researchers at security startup Xbow used OpenAI's GPT-5.6 Sol model to help chain three zero-day vulnerabilities in Chrome into an exploit capable of executing code outside the browser's sandbox on Windows machines. Xbow estimates that this could affect about one billion users worldwide. Google fixed all three, and paid the Xbow team a $250,000 bounty, its top reward for a Chrome full-chain exploit.