Failure Pattern
Stolen identity or compromise happens silently: the attacker uses a stolen token, and the browser shows “You are logged in!”.
User Impact
The user feels gaslit: “How am I already logged in on a device I never used?”
Underlying Causes
Reusable tokens
Cross-device token sync
No device-level identity enforcement
Trust-Native Resolution
The browser shows identity sessions only when this device’s TrustKey matches what the server expects.
Broken Trust Assumption
Many of the most damaging breaches of the past decade occurred in environments that were fully authenticated, encrypted, and compliant.
Incidents including SolarWinds, NotPetya, Capital One, and MOVEit show a consistent pattern: attackers succeeded by inheriting trust, not by breaking it. Security controls validated access, but not intent.