US security professionals took part in BlackCat ransomware attacks
People working in ransomware response and negotiation in the US used ALPHV/BlackCat to carry out ransomware attacks against US organisations. The US Department of Justice and prosecutors brought charges against them over their involvement in the attacks in November 2025. Two security professionals later pleaded guilty to taking part in the attacks.
Key facts
- Affected organisation
- Being confirmed
- Incident type
- Ransomware
- Occurred / detected
- Not confirmed
- Scale of damage
- Not confirmed
- Cause / method
- ALPHV/BlackCat ransomware attacks by people working in ransomware response
- Location
- United States
Timeline
- The FBI accused employees of a Chicago ransomware response firm of involvement in hacking.
- Prosecutors and the US Department of Justice made public charges that ransomware response and negotiation workers had taken part in ALPHV/BlackCat attacks.
- An employee of a Chicago security firm pleaded guilty over a $1.3 million ransomware hack.
- It was reported that two security professionals had pleaded guilty to taking part in BlackCat ransomware attacks targeting US organisations.
8 related reports
- Chicago firm that resolves ransomware attacks had rogue workers carrying out their own hacks, FBI says
- Prosecutors allege incident response pros used ALPHV/BlackCat to commit string of ransomware attacks
- DOJ accuses US ransomware negotiators of launching their own ransomware attacks
- Rogue employee of Chicago cybersecurity firm pleads guilty to $1.3 million ransomware hack
- Ransomware responders plead guilty to using ALPHV in attacks on US organizations
- US cybersecurity experts plead guilty to BlackCat ransomware attacks
- 2 Cyber Pros Admit to Being BlackCat Ransomware Affiliates
- Two US Cybersecurity Pros Plead Guilty Over Ransomware Attacks
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.