Tailscale: Policy file (ACL) modified

Identifies when the tailnet ACL/policy file is modified. Review the diff - incorrect ACLs can silently expand blast radius across the tailnet.

Detection logic

Detection requirements

Platform: 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

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Detection rules

Tailscale: Policy file (ACL) modified

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules