Block says OpenAI tools speed security response; shares edge lower

Block said it is using OpenAI technology to build AI-powered security tools that help its security team investigate threats faster and propose patches in minutes, according to an OpenAI post published on Wed, 14 Oct 2026. The disclosure highlights how the fintech company is applying generative AI inside its security workflow rather than only in customer-facing products. In the source material, Block’s security team is described as using the technology to accelerate threat investigation and patch drafting.

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