Rethinking Lateral Movement: Micro-Segmentation Strategies for 3691 Defenders
Introduction: The Failure of Traditional Perimeter DefenseFor years, defenders relied on a hard outer shell—firewalls, VPNs, and network access controls—to keep attackers out. But as cloud adoption, remote work, and SaaS sprawl dissolve the corporate perimeter, that shell no longer holds. Once an attacker breaches a single endpoint or application, they often find a flat internal network where lateral movement is trivial. In fact, many industry surveys suggest that the majority of breach dwell ti