The Globe and Mail reports in its Wednesday edition that Visa has open-sourced part of its AI-powered cyberdefence system after "humbling" lessons from vulnerabilities exposed by artificial-intelligence models, as the payments giant braces for autonomous cyberattacks and future quantum-computing threats. A Reuters dispatch to The Globe says Visa processes roughly a billion payments a day worth around $15-trillion (U.S.) a year, making it a key part of the world's financial plumbing system. Its president of technology, Rajat Taneja, told Reuters the company had made its cyberdefence system available as open-source software after weaknesses exposed by Anthropic's Mythos AI model earlier this year highlighted the scale of the challenge. The vulnerabilities were "humbling," Mr. Taneja said, adding that the attack by AI agents on the Hugging Face platform may also prove to be an early glimpse of a more serious future threat. "It's hard to predict how bad it could get, but we have seen the trailer," Mr. Taneja said. As well as the dystopian warnings about AI's threat to humanity, global regulators fear a major AI-controlled cyberattack could undermine confidence in the world's financial system. Visa has plenty at stake.