Elastic Security Detection Rules

M365 Exchange DLP Policy Deleted

Last updated 22 days ago on 2025-12-10
Created 5 years ago on 2020-11-20

About

Identifies when a Data Loss Prevention (DLP) policy is removed in Microsoft 365. An adversary may remove a DLP policy to evade existing DLP monitoring.
Tags
Domain: CloudData Source: Microsoft 365Use Case: Configuration AuditTactic: Defense EvasionLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Defense Evasion (TA0005)(external, opens in a new tab or window)

↳ Impair Defenses (T1562)(external, opens in a new tab or window)

False Positive Examples
A DLP policy may be removed by a system or network administrator. Verify that the configuration change was expected. Exceptions can be added to this rule to filter expected behavior.
License
Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
logs-o365.audit-*filebeat-*
Related Integrations

o365(external, opens in a new tab or window)

Query
text code block:
event.dataset:o365.audit and event.provider:Exchange and event.category:web and event.action:"Remove-DlpPolicy" and event.outcome:success

Install detection rules in Elastic Security

Detect M365 Exchange DLP Policy Deleted in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).