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CYBERSECURITY

HOW CAN ONE COMPROMISED IDENTITY OR DEVICE BE PREVENTED FROM COMPROMISING AN ORGANIZATION?

Defense-in-depth, identity segmentation and measurable blast-radius reduction, assuming that some credential or device compromise may occur.

ANSWER 1 OF 1 · contributed by Ahmed Schrute

  1. A single compromised workstation becomes an organisation-wide breach mainly through lateral movement, where one reusable credential opens many hosts.
  2. Unique per-host local administrator passwords, rotated automatically and held centrally, remove the shared secret that makes one captured credential reusable everywhere.
  3. The measurable claim is blast radius: count hosts reachable from one compromised machine before and after rotation, in a lab with seeded credentials.
  4. The cost is operational, because emergency local access now depends on a central service, so its outage becomes an incident-response problem of its own.
  5. Next, simulate loss of that credential service during an incident and measure how long regaining local host access actually takes.