SANS Senior Instructor Ismael Valenzuela (@aboutsecurity) co-authored his #SEC530 course around a simple idea: think like an attacker, act like a defender. His Think Red, Act Blue framework has shaped how thousands of security professionals approach defensible architecture — from network segmentation and identity controls to cloud security across the hybrid enterprise. Ismael is teaching SEC530: Defensible Security Architecture and Engineering at #SANSFIRE 2026 in Washington, D.C. this July. If your team is ready to start implementing Zero Trust as an architecture, this is the course to take. 🔗 Register for SANSFIRE 2026 → go.sans.org/gMPqBA #SANSLiveTraining