Breaking the Flat Network: How Tiering Models Protect Active Directory

Original text by Aurelien Chalot

The article explains why many enterprise networks remain vulnerable due to flat network architectures, where systems and administrative privileges are poorly segmented. Drawing on years of internal penetration-testing experience, the author shows that even organizations equipped with modern security tools can still be compromised if attackers gain an initial foothold.…

https://core-jmp.org/2026/03/breaking-the-flat-network-how-tiering-models-protect-active-directory/