Member Added to Group

Linux UbuntuAuth LogGroup ActivityUser Account

Enabled by default

Service: syslog

Log type: auth.log

Group membership change can indicate a user adding themselves to an admin group without permissions. It is important to monitor the groups that have escalated permissions.

View Logs
grep usermod /var/log/auth.log | grep add
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Language: bash
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Compliance

HIPAA

Level: Recommended

https://www.hhs.gov/sites/default/files/ocr/privacy/hipaa/administrative/combined/hipaa-simplification-201303.pdf?language=es

NSA Event Forwarding

Level: Recommended

https://github.com/nsacyber/Event-Forwarding-Guidance/tree/master/Events

Due to the limitations of the GNOME Logs app, we do not currently have a GUI way to view this log. We recommend using the command line. The auth.log tracks when a user is added to a group. To see the logs of a user being added to a group, enter the command grep usermod /var/log/auth.log | grep add.

Additional References