John Groetzinger
Principal Engineer at Cisco focused on applying AI to developer tooling and security, creator of CodeGuard — a security skills layer for AI coding agents that Cisco open sourced to the community.
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Feb 25, 2026 • 34min
Cisco Principal Engineer's Fix for AI Code Security
John Groetzinger, Principal Engineer at Cisco who built CodeGuard, a security skills layer for AI coding agents. He explains how CodeGuard teaches agents to write and review code securely. They discuss simplifying security guidance, packaging skills across IDEs, measuring activation and using task evals. John also covers design lessons, when to run evaluations, and why Cisco open sourced the project.
