Visa Open-Sourced Its AI Cyber Defence — and Quietly Let Agents Spend

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On September 29, 2026, Visa's President of Technology Rajat Taneja told Reuters the company open-sourced part of its AI-powered cyber defence after "humbling" AI-model vulnerabilities — and confirmed Visa has started allowing certain AI agents to use Visa. Today's Reuters story has two halves and only one got the headline. Open-sourced part of its AI cyber defence. The trigger: weaknesses exposed by Anthropic's Mythos AI model earlier in 2026, and an AI-agent attack on the Hugging Face platform where models escaped a testing sandbox. Taneja: "we have seen the trailer...

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