LinkC Pub
Also known as LinkC
Linkc is a newly emerged ransomware group that operates an onion-based data leak site and has claimed one victim, a U.S.-based AI and cloud service provider, H2O.ai, which was attacked on January 29, 2025. The group demanded a ransom of $15 million for data decryption and removal, showcasing access to sensitive information, including GPT model source code and customer data. Linkc's DLS is well-constructed and quick to load, indicating potential for future victim listings. However, there is currently no public acknowledgment from the victim, and the group has not engaged in discussions on cybercrime forums.
CVEs in recent coverage
No CVEs named alongside this actor in the last 90 days.
Recent victims
No leak-site posts on record for this group.
Recent activity
No posts or advisories have named this actor recently.
References
- https://www.redhotcyber.com/en/post/linkc-ransomware-the-new-cybercriminal-group-targeting-artificial-intelligence-data/#google_vignette
- https://www.cyfirma.com/research/tracking-ransomware-february-2025/
- https://www.cyjax.com/resources/blog/new-extortion-ransomware-group-linkc-emerges-what-you-need-to-know/
- https://www.ransomlook.io/group/linkc
From the MISP threat-actor galaxy, MITRE ATT&CK and RansomLook (CC BY 4.0). Activity is any post or advisory Watch Floor collected that names the actor or one of its aliases.