# Source: https://docs.datadoghq.com/security/default_rules/def-000-8u5.md

---
title: Tailscale security email modified
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: Docs > Datadog Security > OOTB Rules > Tailscale security email modified
---

# Tailscale security email modified
Classification:attackTactic:[TA0005-defense-evasion](https://attack.mitre.org/tactics/TA0005)Technique:[T1562-impair-defenses](https://attack.mitre.org/techniques/T1562) 
## Goal{% #goal %}

Detect when the Tailscale security issues email has been modified.

## Strategy{% #strategy %}

This rule monitors Tailscale logs when the security issues email has been modified. The Tailscale security issues email is used for notifications about security issues affecting your tailnet. An unauthorized entity modifying this email could be an indicator of a compromised tailscale tenant owner or an insider threat.

## Triage and response{% #triage-and-response %}

1. Investigate the user `{{@usr.email}}` that modified the security email within your Tailscale configuration.
1. If the activity is deemed malicious:
   - Begin your organization's incident response process and investigate.