// MITRE ATT&CK
T1033 · System Owner/User Discovery
Adversaries may attempt to identify the primary user, currently logged in user, set of users that commonly uses a system, or whether a user is actively using the system. They may do this, for example, by retrieving account usernames or by using [OS Credential Dumping](https://attack.mitre.org/techni...
How to detect & mitigate it
Detecting System Owner/User Discovery starts with your SIEM/EDR telemetry. Write a detection rule with the Sigma generator, analyze suspicious logs in the log analyzer, and place the technique on your coverage with the ATT&CK matrix.
Related techniques
T1613
Container and Resource Discovery T1016.001
Internet Connection Discovery T1069
Permission Groups Discovery T1069.003
Cloud Groups T1615
Group Policy Discovery T1652
Device Driver Discovery T1087.002
Domain Account T1087.001
Local Account
Container and Resource Discovery T1016.001
Internet Connection Discovery T1069
Permission Groups Discovery T1069.003
Cloud Groups T1615
Group Policy Discovery T1652
Device Driver Discovery T1087.002
Domain Account T1087.001
Local Account
Source: MITRE ATT&CK®. ATT&CK is a registered trademark of The MITRE Corporation. Content for educational purposes.