Isolation
Isolation: The separation of a system, process, or resource to limit access and prevent spread. Secure use depends on clear boundaries, correct configuration, monitoringMonitoringThe continuous observation of systems, identities, networks, and controls for relevant changes., and a controlled lifecycle.
How it works and where it fits
Isolation is a preventive, detective, or corrective security control. Its effect depends on where it sits in the architecture, which data and decisions it processes, and how it might be bypassed. A control reduces a defined risk but rarely removes it completely, so it should be combined with additional layers of protection.
Practical security relevance
Before deployment, the objective, ownership, coverage, and expected behavior should be defined. Secure defaults, controlled exceptions, logging, and periodic effectiveness tests matter more than installation alone. Operational metrics should expose both blocked or detected activity and gaps, false alerts, and effects on legitimate business processes.
Related concepts
- ContainmentContainmentActions that limit the scope, spread, and impact of an active security incident.: Actions that limit the scope, spread, and impact of an active security incident.
- QuarantineQuarantineIsolates suspicious files, messages, or devices from production resources.: Isolates suspicious files, messages, or devices from production resources.
- SandboxingSandboxingExecutes unknown code in isolation to observe its effects and behavior.: Executes unknown code in isolation to observe its effects and behavior.
- Network SegmentationNetwork SegmentationSeparates network segments to control access and limit lateral movement.: Separates network segments to control access and limit lateral movement.