Black Suit ransomware group
Black Suit is one of the extortion operations we watch continuously. This page covers what is known about the group and the current state of its leak site, which we last saw change 2mo ago.
Who they are
BlackSuit first appeared in May 2023 and is a confirmed rebrand or direct evolution of Royal Ransomware. It operates as a Ransomware-as-a-Service (RaaS), employing a double-extortion model—encrypting files and stealing sensitive data for leak threats. BlackSuit targets Windows and Linux systems, including VMware ESXi environments, using the .blacksuit extension for encrypted files. Technical analysis shows strong code overlaps (≈98%) with Royal, itself believed to be run by former Conti affiliates. Victims span healthcare, critical manufacturing, education, and government sectors, with notable incidents affecting public health systems in the U.S. Initial access vectors include phishing, exploitation of public-facing applications (e.g., Citrix and Fortinet vulnerabilities), and compromised credentials purchased from initial access brokers. Ransom notes direct victims to Tor-based negotiation portals.
Current status
Black Suit's leak site is not answering. Sites go dark for infrastructure trouble, a deliberate quiet period, or a takedown, and a good number return weeks later under the same name, so the entry stays on the list either way.
The last change we recorded on it was 2mo ago (23 Jun 2026 22:30 UTC).
Which organisations this group has named, and when, is part of the SINON platform rather than this page. Create an account to search it, or to be told automatically if a name you care about turns up.
Sectors targeted
This group does not state an industry on its site, so we have nothing reliable to report. Most crews are opportunistic rather than sector-specific in any case — they hit what they can reach.
Watching for your name
If Black Suit posts your company, a supplier or a subsidiary, you want to hear it from us rather than from a journalist. SINON checks these sites continuously and alerts on the names you give it.
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