- | 10:00 am Rajat Taneja on building Visa’s defense for the agentic era Visa's President of Technology on fraud models, VVAH, and getting ahead of the quantum threat Every fraud model Visa runs is built to keep moving. As commerce shifts toward agents transacting on a person’s behalf, that constant evolution faces its biggest test yet, one where the credential being protected is no longer just a card, but the authority a person has handed to a piece of software. Rajat Taneja, President of Technology at Visa, spoke to Fast Company Middle East in an exclusive conversation on the eve of the Visa Payments Forum in Paris, the company’s flagship European gathering held at the Paris Convention Center on July 1 and 2. He outlined how Visa is reshaping its technology stack to address a rapidly evolving threat environment, from fraud detection and the newly public Visa Vulnerability Agentic Harness, or VVAH, to preparing for the impact quantum computing could eventually have on encryption. Taneja also discussed the changes that occur when consumers delegate authority to AI agents, how Visa is using AI to defend against increasingly sophisticated attacks, and why cybersecurity and payment security are converging. ADAPTIVE FRAUD DEFENSE Fraud models at Visa are never static, Taneja says, comparing them to living systems that train and adapt continuously as new scams emerge around whatever is trending at the time. “Think of them as living organisms. They are AI-based, and they’re constantly training, learning, and evolving,” he says. “Just like the bad guys are changing their techniques and using technology in new and different ways, there are scams that take birth based on topical use cases that are happening.” That same dynamism extends to agentic commerce, where data and underlying mathematics are continually fine-tuned to keep pace with attackers.