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

The Square and Cash App parent says its OpenAI-built Daybreak system automates about 1,100 analyst-hours of investigations every quarter 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. 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.

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