Phishing Abuses RMM Tools for Persistent Access

Reported by Microsoft Security (Microsoft Security Research, Parasharan Raghavan, Deva Kanna Kannan, Sai Chakri and Microsoft Defender Experts)

Summary by Cyber Security News29 Sep 2026, 23:39 CEST

About this summary. This is a short, independently written summary of an article first published by Microsoft Security. Cyber Security News did not report or verify the underlying story. Read the original: https://www.microsoft.com/en-us/security/blog/2026/09/29/phishing-abuses-rmm-tools-persistent-access/

Attack chain overview Mitigation and protection guidance Learn More In July 2026, Microsoft Defender Experts observed phishing campaigns targeting organizations across multiple industries that distributed a masqueraded MSP360 Remote Monitoring and Management (RMM) installer through meeting invitations, PDF-themed lures, software update prompts, and other social-engineering content.

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