> 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/dlp-sensitive-data-exposed-to-external-users.md).
# DLP sensitive data exposed to external users
### Synopsis
| Field | Value |
| -------------------- | ------------------------------------------------------------------------------------------------------ |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | Office 365 Audit |
| Detection Modules | Identity Threat Module, Email |
| Detector Tags | O365 DLP Analytics, Data Detection & Response |
| ATT\&CK Tactic | Collection (TA0009) |
| ATT\&CK Technique | Data from Information Repositories: Sharepoint (T1213.002), Data from Information Repositories (T1213) |
| Severity | Informational |
### Description
A user triggered an O365 DLP rule match on data that is viewable by external users. This may indicate an attacker's attempt to access sensitive information.
### Attacker's Goals
An attacker is attempting to access sensitive information.
### Investigative actions
* Review the details of the triggered DLP rule match. Look for signs that the user account and mailbox are compromised (e.g. abnormal logins, unusual activity).
* Follow further actions done by the account.
* Communicate with the user to verify the legitimacy of the triggered event.
### Variations
High-severity DLP sensitive data exposed to external users
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------------------------------------------------------------------ |
| ATT\&CK Tactic | Collection (TA0009) |
| ATT\&CK Technique | Data from Information Repositories: Sharepoint (T1213.002), Data from Information Repositories (T1213) |
| Severity | Low |
**Description**
A user triggered an O365 DLP rule match on data that is viewable by external users. This may indicate an attacker's attempt to access sensitive information.
**Attacker's Goals**
An attacker is attempting to access sensitive information.
**Investigative actions**
* Review the details of the triggered DLP rule match. Look for signs that the user account and mailbox are compromised (e.g. abnormal logins, unusual activity).
* Follow further actions done by the account.
* Communicate with the user to verify the legitimacy of the triggered event.
---
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