Dispossessor ransomware group
Dispossessor 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 1y ago.
Who they are
Dispossessor, active since August 2023, was a data-extortion ransomware-as-a-service group led by the moniker "Brain". The group quickly expanded from U.S.-focused attacks to target small and mid-sized organizations globally—across sectors like healthcare, finance, transportation, education, and manufacturing. Their tactics included exploiting weak passwords and lack of multifactor authentication to gain access, followed by data exfiltration and staged extortion: victims were contacted via email or phone with links to proof-video platforms, and exposed on Tor-based leak sites if no payment was made. Many of the organizations targeted (approximately 43 identified) were across diverse countries including the U.S., Canada, Brazil, India, Germany, and more. By mid-2024, international law enforcement—including the FBI, UK National Crime Agency, and German agencies—successfully dismantled their infrastructure.
Current status
Dispossessor'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 1y ago (26 Jun 2025 19:01 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 Dispossessor 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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