Block taps OpenAI to speed up threat hunting while humans keep the final say

Block, the company behind Square, Cash App, and Afterpay, has brought OpenAI’s technology into the core of its security operations. The details come from a case study published on October 14, 2026. It describes a custom security orchestration system called Daybreak, which Block developed in partnership with OpenAI. What Daybreak actually does According to the case study, Daybreak automates three of the most labor-intensive jobs in a security team: vulnerability discovery, threat detection, and incident response. It works by linking security signals that would otherwise sit in separate silos. It also simulates attack paths, which means it maps how an intruder could move from one weakness to the next. The workflow has a clear boundary. The AI handles signal correlation and drafts issues for the team. Humans verify the findings and deploy any changes. The numbers behind the pitch Block reports efficiency gains that would get any security leader’s attention. Triage throughput rose by roughly 50%. The volume of intelligence gathering and investigations climbed by about the same margin. The system now automates around 1,100 analyst-hours of investigative work per quarter. Block also says...