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Detection Techniques for Outlook NotDoor Backdoor Malware Revealed

First seen 2 Dec 2025, 18:33 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

The Splunk Threat Research Team has identified a new malware strain named NotDoor, which exploits Microsoft Outlook. This backdoor malware poses risks to users by potentially allowing unauthorized access to their systems. Researchers have detailed various techniques to detect this malware effectively.

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