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#4 The Hacker News general June 08, 2026 at 07:39 UTC

UNC3753 Used Vishing and Physical Intrusions in U.S. Data Theft Extortion Campaign

By [email protected] (The Hacker News)

AI Summary

Google Mandiant attributed a financially motivated data theft and extortion campaign (January–May 2026) to UNC3753, also tracked as Silent Ransom Group, which targeted dozens of U.S. organizations in professional, legal, and financial services. The group employed vishing, IT impersonation, DNS fast flux to obscure C2 infrastructure, and physical office intrusions to steal data. The multi-vector TTPs make this threat particularly difficult to defend against with purely technical controls.

Read full article → https://thehackernews.com/2026/06/unc3753-used-vis…

Relevance score: 87.0/100

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