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Microsoft seizes 338 websites to disrupt rapidly growing ‘RaccoonO365’ phishing service

Posted on September 18, 2025 by Dissent

Giles Bruce reports:

Microsoft has seized 338 phishing websites associated with a cybercrime service that targeted at least 20 U.S. healthcare organizations.

Using a court order granted by the U.S. District Court for the Southern District of New York, the tech giant’s Digital Crimes Unit disrupted RaccoonO365, which offers subscription-based phishing kits allowing novices to mimic official Microsoft communications to steal Microsoft 365 usernames and passwords. The company also identified the cybercriminal group’s leader as an individual based in Nigeria.

Microsoft filed its lawsuit in partnership with global cybersecurity nonprofit Health-ISAC because the tool has been deployed against so many hospitals.

Read more at Becker’s Health IT.

Category: Health DataPhishingU.S.

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