Cheat Sheet: 5 Best Practices to Reduce Attack Surface and Shrink Blast Radius

As attackers leverage AI-accelerated techniques to achieve impossibly fast breakout times and weaponize the emerging agentic attack surface to subvert traditional security strategies, the only reliable advantage for defenders is preemptive cyber resilience – reducing the attack surface and limiting how far adversaries can move when breaches inevitably occur.

Rather than investing in more faithful detection or faster response, security teams can ensure breaches stay isolated before the first alert fires by focusing on five interconnected priorities: 

1. Gain comprehensive network visibility to identify risk exposure 
2. Remove unnecessary access paths and close unused ports to reduce attack surface 
3. Implement identity-based microsegmentation to structurally constrain blast radius 
4. Enforce just-in-time MFA for privileged access 
5. Dynamically adapt policies with deterministic, human-on-the-loop automation 

Download this cheat sheet for a roadmap to minimizing your attack surface and making cyber resilience a built-in feature of the network architecture.