Block taps OpenAI Daybreak for AI-powered security operations
In a customer story published by OpenAI, Block — the company behind Square, Cash App and Afterpay — says its security team uses the OpenAI Defense Factory and has built its security harness on OpenAI Daybreak to handle vulnerability discovery, detection and response, with humans validating every result and deploying changes. OpenAI reports that Block can now replay a proposed detection change against seven months of production telemetry in under an hour, that a recent red-team exercise went from a high-level vulnerability submission to an automated proposed patch in about 18 minutes, and that the team saw a 50% boost in triage throughput, a 50% increase in intelligence gathering and investigations, and roughly 1,100 analyst-hours of investigation per quarter. Block CISO James Nettesheim said the team now picks different models for different tasks and plans to raise the risk level for more sensitive systems as AI judgment is proven out.
The case illustrates AI agents moving into security operations on both attack and defense sides, though the reported gains come from the vendor and its customer and are not independently verified.