Jack Sullivan

Jack Sullivan is a cybersecurity researcher and privacy advocate with more than a decade of experience testing VPNs, encryption tools, and consumer security software. He specializes in independent VPN auditing, evaluating no-logs claims, DNS and IPv6 leak protection, and encryption standards against real-world threat models rather than marketing copy. His writing covers privacy legislation, data-broker practices, and the practical steps readers can take to reduce their exposure online. He believes strong privacy tools should be understandable to everyone, not just security professionals.