MEDIUMVulnerability
Global

Mailbox Rule Abuse Emerges as Stealthy Post-Compromise Threat

·Source: Infosecurity Magazine

Updated:

Executive Summary

Attackers are abusing Microsoft 365 mailbox rules to hide activity, exfiltrate data and retain access after account compromise, researchers warn

Analysis

Attackers are abusing Microsoft 365 mailbox rules to hide activity, exfiltrate data and retain access after account compromise, researchers warn
Source Attribution

Originally published by Infosecurity Magazine on Apr 13, 2026.

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