Who really has access to your applications and critical infrastructure? You’ve probably heard that identity is the new security perimeter. But how far does that perimeter extend? The key is knowing which assets are in Tier 0—the critical control plane that must be secured to protect your organization from cyber threats—and which potential attack paths lead to those assets, including Active Directory (AD). Semperis Senior Director of Security Product Management, Ran Harel, discusses the challenges of AD security and attack path management in hybrid AD environments.