huntrule

Possible Locked Workstation (via security)

This rule detects locked workstation session events that occur automatically after a standard period of inactivity.

SigmainformationalWindowsv1
sigma
title: Possible Locked Workstation (via security)
id: 10067010-d879-5711-a82a-85ff52cc2f42
status: stable
description: This rule detects locked workstation session events that occur automatically after a standard period of inactivity.
references:
    - https://www.cisecurity.org/controls/cis-controls-list/
    - https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf
    - https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf
    - https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=4800
author: Huntrule Team
date: 2026-04-27
tags:
    - attack.impact
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID: 4800
    condition: selection
falsepositives:
    - Unknown
level: informational

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.