> 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/saas-suspicious-external-domain-user-activity.md).
# SaaS suspicious external domain user activity
### Synopsis
| Field | Value |
| -------------------- | ----------------------------------------------------------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | Requires one of the following data sources:
Google Workspace Audit Logs OR Office 365 Audit
|
| Detection Modules | Identity Threat Module |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | External Remote Services (T1133) |
| Severity | Informational |
### Description
An operation was performed by an identity. This identity belongs to a domain that was not seen in the organization before.
### Attacker's Goals
Gain their initial foothold within the organization and explore the environment to achieve their target.
### Investigative actions
* Investigate the external domain name.
* Check the identity activity in the organization.
### Variations
Suspicious external user activity detected from a domain first seen in the organization
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------- |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | External Remote Services (T1133) |
| Severity | Low |
**Description**
An operation was performed by an identity. This identity belongs to a domain that was not seen in the organization, both in cloud and SaaS environments.
**Attacker's Goals**
Gain their initial foothold within the organization and explore the environment to achieve their target.
**Investigative actions**
* Investigate the external domain name.
* Check the identity activity in the organization.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/saas-suspicious-external-domain-user-activity.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.