The third intrusion came at 3:17 AM, not with a crash, but with the soft click of a key that shouldn’t have worked. I lay frozen, listening to the floorboards in the hallway confess their secrets one by one. Creak. Pause. Creak.
Assume a single workstation is compromised. The attacker uses credential dumping ( Mimikatz ). Intrusion 3 sees an anomalous LSASS memory read. But instead of just killing the process, it triggers a routing blackhole . The compromised workstation is instantly severed from all network resources except a "quarantine VLAN" that mimics the production environment—a digital Siberia. intrusion 3