AI Summary

A financially motivated data theft extortion campaign has been attributed to a threat actor known as UNC3753. The campaign targeted dozens of organizations in the U.S. between January and May 2026. The threat actor used a combination of tactics, including vishing and physical intrusions, to gain access to sensitive information. Vishing, or voice phishing, involves tricking individuals into divulging confidential information over the phone. Physical intrusions, on the other hand, involve unauthorized access to a physical location. The campaign's targets included organizations in the professional, legal, and financial services sectors. The involvement of UNC3753 in this campaign has been confirmed by Google Mandiant and Google Threat Intelligence Group.

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