Visa CISO Subra Kumaraswamy joins Safe Mode to discuss the global scale and complexities of cybersecurity at Visa, from managing a billion transactions daily to maintaining a resilient, “paranoid” defensive posture. Subra reveals how his team blends innovation, threat intelligence, and layered security architectures—not just to protect Visa, but to uplift the wider payment ecosystem—including strategies for defending against supply chain attacks, leveraging AI, and preparing for deepfakes and post-quantum computing. The episode provides a look behind the scenes at how Visa is working to ensure trust and reliability in payments for its global network of cardholders, partners, and merchants.