TA0040 · IMPACT
External Defacement
An adversary may deface systems external to an organization in an attempt to deliver messaging, intimidate, or otherwise mislead an organization or users.
Detect it with
Monitor external websites for unplanned content changes. Monitor application logs for abnormal behavior that may indicate attempted or successful exploitation.
Why it matters on shift
External Defacement is one of the concrete ways adversaries achieve impact. Recognising it in telemetry lets you name the technique in your ticket and pivot to what came before and after.
What to look for next
After impact, the next tactic is usually Impact. Search your telemetry for the transition before closing the ticket.
Kill-chain context