Bjorka ransomware group
Bjorka 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 17h ago.
Who they are
Hellcome Bjorkanism
Bjorka emerged as a prominent data-extortion actor and hacktivist initially active in 2022, targeting Indonesian institutions with massive data leaks—including voter records, police data, and internal telecom and utility datasets. After going quiet in 2023, the actor resurfaced in early 2025, now positioning under the name Babuk2, leveraging legacy branding from the Babuk ransomware group to amplify perceived credibility and fuel data extortion operations. Notably, Bjorka has not been linked to deploying true ransomware payloads; rather, the strategy revolves around reputational leverage via data leaks and selecting branding for psychological impact.
Current status
Bjorka's leak site is answering our checks. That does not mean the group is actively posting — plenty of sites stay up for months with nothing new on them — but the infrastructure is live.
The last change we recorded on it was 17h ago (4 Sep 2026 19:14 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 Bjorka 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.
Start monitoring