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Threat actor

UNC3753

Tracked by CyberSIXT since Jun 5, 2026 · last activity Jun 15, 2026

Linked incidents

malware closed 4 articles

Silent Ransom Group targets US law firms with vishing and impersonation

campaign closed 1 article

UNC3753 conducts vishing and USB drop attacks to steal legal data

Coverage timeline

UNC3753 Vishing Campaign Targets US Law Firms with Fake Invoices
securityonline.info · Jun 15, 2026
UNC3753 gang uses vishing and USB drops to steal legal data
securityaffairs.com · Jun 8, 2026
UNC3753 gang uses vishing and break ins for US data theft
thehackernews.com · Jun 8, 2026
UNC3753 voice phishing hits US law firms, steals data
cloud.google.com · Jun 5, 2026