Assume Breach
Assume Breach — Compromise Readiness Principle in Zero Trust
Readiness
Preparation for compromise
Monitoring
Continuous observation
Response
Rapid detection and isolation
What Does "Assume Breach" Mean?
"Assume Breach" is a Zero Trust principle that assumes the system may already be compromised or will be compromised in the future. Rather than relying solely on attack prevention, this principle requires designing systems with the assumption that attackers may already be inside the network.
This approach forces organizations to focus on threat detection, damage limitation, and rapid incident response. The Assume Breach principle requires implementing network segmentation mechanisms, activity monitoring, anomaly detection, and automated threat response.
The Assume Breach principle is closely related to the "defense in depth" concept and requires that even if one system component is compromised, other components remain protected and isolated. This minimizes potential damage and allows rapid threat localization and elimination.
Key Aspects:
Related Concepts
Principle Implementation
Threat Detection
Continuous activity monitoring to detect anomalies, suspicious behavior, and signs of compromise in real-time.
Network Segmentation
Dividing the network into isolated segments with access control between them, preventing lateral movement of attackers.
Automated Response
Automatic isolation of compromised systems and blocking of suspicious activity without human intervention.
Incident Response Plan
Developed procedures and processes for rapid response to security incidents, including escalation, investigation, and recovery.
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