Quarantine

Quarantine: Isolates suspicious files, messages, or devices from production resources. The focus is on endpointsEndpointA user or server device that communicates with a network and runs workloads or applications., serversServerA system that provides applications, data, or network services to other systems., or device-level technology. Typical measures include hardening, centralized managementCentralized ManagementAdministration of distributed systems or controls from a common management plane., telemetryTelemetryAutomatically collected measurements and events that describe the state and behavior of systems., rapid isolationIsolationThe separation of a system, process, or resource to limit access and prevent spread., and controlled updates.

How it works and where it fits

Quarantine belongs to a prepared workflow for handling security-relevant events. A technical signal becomes a substantiated incident only through triage, context, and assessment. Roles, decision authority, escalation paths, and stopping conditions should therefore be agreed in advance so actions remain consistent under time pressure.

Practical security relevance

Execution must balance rapid containment with careful evidence preservation. Actions should not unnecessarily destroy important traces or disrupt business operations without control. Timelines, decisions, and changes are documented; after recovery, root causes, identified gaps, and lessons learned feed back into controls, detection logic, and response plans.

Related concepts

• Incident ResponseIncident ResponseA structured process for the preparation, detection, containment, eradication, and post-incident review regarding security incidents.: A structured process for the preparation, detection, containment, eradication, and post-incident review regarding security incidents.
• Endpoint Detection and ResponseEndpoint Detection and ResponseContinuously monitors endpoints and supports detection, investigation, and containment.: Continuously monitors endpoints and supports detection, investigation, and containment.
• Anti-MalwareAnti-MalwareTechnologies for detecting, blocking, and removing malicious software.: Technologies for detecting, blocking, and removing malicious software.
• MalwareMalwareUmbrella term for software with malicious or unwanted functionality.: Umbrella term for software with malicious or unwanted functionality.