Search: “UNC3753”

11 stories

Security AffairsJun 8, 10:46 UTC · Jun 8, 2026Phishing & fraud

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

The Hacker NewsJun 8, 09:58 UTC · Jun 8, 2026Ransomware

Brand Impersonation Takedown: From Whack-a-Mole to Managed Response

Mandiant-tracked group UNC3753 impersonated US professional services firms' brands in 2026; Cyble urges managed takedowns over manual abuse reports.

Cyble describes how Google Mandiant-tracked group UNC3753 targeted US professional services firms between January and May 2026 using brand impersonation, spoofed domains, and fake executive profiles. Manual takedowns fail because phishing pages damage brands within hours while removal takes days. A managed takedown program with continuous monitoring and pre-authorized removal cuts the exposure window from days to hours.

CybleAug 17, 14:32 UTC · 29d agoPhishing & fraud in the wild

Search: “UNC3753”

UNC3753 Escalates: From Vishing Calls to Physical Office Intrusions at US Legal and Financial Firms

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

Brand Impersonation Takedown: From Whack-a-Mole to Managed Response

Silent Ransom Group (SRG): Switching To DNS Fast Flux Infrastructure

Silent Ransom Group Uses In-Person IT Impersonation to Breach Systems

ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 More

FBI warns US-based law firms to be on the lookout for cybercrime group that steals data in person

FBI warns extortion hackers are visiting US law firms to steal data

Hackers are knocking on office doors pretending to be IT staff

Hackers Are Calling Your Office: FBI Alerts Law Firms to Luna Moth’s Stealth Phishing Campaign

Silent Ransom Group targeting law firms, the FBI warns