Microsoft and partners disrupt global phishing operation targeting over one billion messages
What happened
Microsoft and partners seized domains linked to a global phishing operation on October 14, 2026.
The Context
- Collaboration: Microsoft’s Digital Crimes Unit worked with Health-ISAC, Japan’s National Police Agency, and several private-sector partners to execute this takedown.
- Scale of Impact: The operation targeted over 75,000 organizations worldwide, with more than 750 million malicious messages aimed at Microsoft customers alone.
- Phishing Kits: The YAM Store marketplace sold phishing kits like CoGUI and Iron Man, which facilitated impersonation campaigns using compromised accounts.
The Number
This staggering figure represents the malicious messages enabled by the seized services since January 2026, underscoring the extensive reach of cybercriminal operations.
Takeaway
As Microsoft continues to dismantle cybercrime infrastructure, expect ongoing efforts to enhance cybersecurity measures across industries.
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