securityBACKGROUND
New BlackFile extortion group linked to surge of vishing attacks
BACKGROUND
1 SIGNALFIRST DETECTED 24 April 2026
Narrative synthesis pending — 1 signal collected.
How the story developed
24 Apr
New BlackFile extortion group linked to surge of vishing attacks
REPORT · WHAT · BleepingComputer
7.3
Other feeds and industry voices
6 Aug
Hedge fund cyberattacks tied to BlackFile-linked UNC6671 extortion group
A recent wave of cyberattacks targeting hedge funds, private-equity firms, and other financial organizations has been linked to UNC6671, an extortion group reportedly associated
REPORT · WHAT · BleepingComputerOPEN STORY
1 May
Cybercrime Groups Using Vishing and SSO Abuse in Rapid SaaS Extortion Attacks
Cybersecurity researchers are warning of two cybercrime groups that are carrying out "rapid, high-impact attacks" operating almost within the confines of SaaS environments, while
REPORT · HOW · The Hacker NewsOPEN STORY
Sources
BleepingComputer
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