How Block is building AI-powered security with OpenAI technology
Block is building AI-powered security with OpenAI. Its security team investigates threats faster and proposes patches in minutes.
Virticle Desk · Edited to Virticle Standards
October 14, 2026
4 minute read
The human is the plot.
In short: How Block is building AI-powered security with OpenAI technology
What moved
At Block, the company behind Square, Cash App, and Afterpay, the security team leverages the OpenAI Defense Factory: where AI handles vulnerability discovery, detection, and response at a scale that no human team could keep up with. With AI systems including OpenAI Daybreak, Block is taking just hours to do work that used to take weeks.
This cleared Virticle’s weekday bar because it looks consequential for someone who is not giving a keynote — not because it won a thread.
Why a human should care
Ask what default, power relation, or daily ritual actually changed. If the answer is still “a demo,” this would not ship on Friday either.
Source
Source → OpenAI News
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