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Barry Yuan

Sr. Solutions Engineer

Cisco Global Partner Sales

With over 25 years of experience in cybersecurity and networking, Barry Yuan serves as a Sr. Solutions Engineer at Cisco Systems. Barry brings a wealth of expertise from his work across the public sector, service provider environments, and multi-vendor landscapes. A double CCIE holder for over 23 years, he is also a prolific inventor with multiple patents and a recognized Cisco Live Distinguished Speaker. Barry is known for his ability to translate complex technical innovations into practical, actionable insights, empowering professionals globally to navigate the evolving cybersecurity landscape.

Articles

March 31, 2026

DEVELOPER

Don’t deploy OpenClaw without securing it – Try this opensource solution and hands-on lab

3 min read

OpenClaw enables powerful AI agent workflows—but introduces new security risks. Learn why securing tools, MCP servers, and agent-generated code is critical, and how DefenseClaw helps protect your environment.

March 27, 2026

DEVELOPER

Bringing AI to DevNet Learning Labs

3 min read

Start a Learning Lab, get instant LLM access. No provider signups, no LLM configuration—just open the terminal and the model is ready. AI Defense, MCP Security, A2A Protocol, and Skill Security labs are live now, with more AI-powered labs coming.

A Developer’s First 10 Minutes: Secure a LangChain Agent with Cisco AI Defense

3 min read

LangChain makes it easy to move from a working prototype to a useful agent in very little time. That is exactly why it has become such a common starting point for enterprise agent development.   Agents don’t just generate text. They call tools, retrieve data, and take actions. That means an agent can touch sensitive systems and real customer data within a single workflow.