In this episode of The CyberVault, I’m joined once again by Sounil Yu - creator of the Cyber Defense Matrix and now leading AI and security strategy at Knostic.

Sounil’s last appearance became one of our most referenced conversations. This time, we go deeper - exploring how his mental models are helping practitioners make sense of security in an AI-powered world.

We explore:

🧠 How AI is changing the way practitioners think and operate
🧩 The conceptual model for understanding AI in security workflows
🔄 How teams move from theory into day-to-day practice
📊 Why DIKW (Data, Information, Knowledge, Wisdom) matters more than ever
⚡ Why the OODA loop is resurfacing in the age of agentic AI
🎯 How these models work together to reduce noise and cognitive load
🛠️ Practical ways teams are applying these ideas right now

If you’re feeling overwhelmed by AI hype and tooling, this episode offers frameworks that bring clarity - without turning into a sales pitch.