Six phases end the incident. The seventh ends the intrusion.
Investigation is not a step you pass through once. Every new artifact — a credential, a beacon, a lateral hop — sends the investigation back through the evidence until no unexplained activity remains. Containment that skips this step contains the wrong thing.
Before the incident, and after it.
Pre-incident threat hunting across your environment — suspicious behavior and hidden footholds identified early, shortening attacker dwell time before anything detonates.
Emergency investigation, containment of spread, eradication of the attacker's access, and recovery — run as one continuous engagement, not four hand-offs.
AKIRA ransomware: the attack was underway long before the ransomware appeared.
The encryption event is the last step of a multi-stage intrusion, not the first. A response that only removes the ransomware leaves the access that delivered it — which is why our investigation runs the timeline backward before we call anything contained.