> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/chrome-extension-installed-by-user.md).

# Chrome Extension Installed By User

### Synopsis

| Field                | Value                                                                                                                                            |
| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
| Activation Period    | 14 Days                                                                                                                                          |
| Training Period      | 30 Days                                                                                                                                          |
| Test Period          | N/A (single event)                                                                                                                               |
| Deduplication Period | 1 Day                                                                                                                                            |
| Required Data        | Google Workspace Audit Logs                                                                                                                      |
| Detection Modules    | Identity Threat Module, SaaS Threat Detection, Email                                                                                             |
| Detector Tags        | Google Workspace                                                                                                                                 |
| ATT\&CK Tactic       | Initial Access (TA0001), Persistence (TA0003)                                                                                                    |
| ATT\&CK Technique    | Supply Chain Compromise: Compromise Software Dependencies and Development Tools (T1195.001), Software Extensions: Browser Extensions (T1176.001) |
| Severity             | Informational                                                                                                                                    |

### Description

A Chrome extension was installed or updated by a Google Workspace user.

### Attacker's Goals

Adversaries may leverage browser extensions installation to gain Initial Access and Persistence, enabling them to intercept credentials and hijack active web sessions.

### Investigative actions

* Review the extension installed, it's OAuth scopes, reputation and permissions.
* Analyze subsequent network traffic from the user's device or browser for connections to newly registered domains.
* Investigate the source IP and identity for previous malicious activity or anomalies.


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