Learn how to protect critical service provider networks from sophisticated attacks in this 50-minute NANOG conference talk. Explore comprehensive security approaches starting from hardware integrity through to operational security measures. Discover various threats targeting network devices, infrastructure, and tools used in building end products. Gain insights into implementing security measures at each network layer, strengthening overall network security posture, and preparing for emerging quantum computing threats. Led by Rakesh Kandula, examine ground-up security strategies that go beyond software features to address hardware vulnerabilities in an ever-evolving threat landscape.