Visa open-sources part of its AI-powered cyber defence.

Visa has made part of its AI-powered cyber-defence system open source as it prepares for adaptive autonomous attacks and longer-term threats to encryption from quantum computing.

By TomorrowNews · AI-assisted briefing
Source published 29 Sept 2026 · Briefing published 30 September 2026

AI-generated illustration of an adaptive cyber-defence network protecting global payment flows; it is not a photograph of Visa's systems. — AI-generated illustration — not a photograph of the event. The payment and security network is conceptual; no Visa system is depicted. · TomorrowNews / AI-generated illustration

Visa's technology president told Reuters that lessons from AI-model vulnerabilities had been 'humbling.' The company processes roughly one billion payments a day worth about $15 trillion annually and has begun allowing certain AI agents to transact through its network.

Visa expects attacks to learn and adapt without direct human control, arguing that defences will also need agentic capabilities. Industry estimates cited by Reuters suggest AI agents could conduct close to $3.1 trillion in online transactions by 2030.

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This is an original summary, not a republication of the full report.

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