LoFP / an anti-phishing policy may be deleted by a system or network administrator. verify that the configuration change was expected. exceptions can be added to this rule to filter expected behavior.

Techniques

• T1566

Sample rules

Microsoft 365 Exchange Anti-Phish Policy Deletion

• source: elastic
• technicques:
  • T1566

Description

Identifies the deletion of an anti-phishing policy in Microsoft 365. By default, Microsoft 365 includes built-in features that help protect users from phishing attacks. Anti-phishing polices increase this protection by refining settings to better detect and prevent attacks.

Detection logic

event.dataset:o365.audit and event.provider:Exchange and event.category:web and event.action:"Remove-AntiPhishPolicy" and event.outcome:success