Tailscale: First-seen actor making configuration changes

Identifies actors making their first configuration change in the lookback window. New legitimate admins look identical to compromised credentials - review whether each surfaced actor is expected to have admin rights.

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_audit_cl

Detection rules

Tailscale: First-seen actor making configuration changes

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules