Tailscale: Devices not seen in 30+ days

Identifies tailnet devices that have not connected to the control plane for at least 30 days. Dormant devices accumulate risk - they may still have valid keys, advertised routes, or tags.

Detection logic

Detection requirements

Platform: Containers ESXi IaaS Identity Provider Linux macOS Network Devices Office Suite SaaS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: tailscaleccf
Log source service: tailscale_devices_cl

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Detection rules

Tailscale: Devices not seen in 30+ days

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules