BlackMatter Ransomware
A data-only profile of BlackMatter, built from its leak-site claims: how much it posts, when, and who it goes after. We make no attribution claim on this page.
Claimed victims
31
Status
Quiet
Last 30 days
0
Top region
United States
Top sector
Professional Services
What the data says
BlackMatter ranks #106 of the 122 groups profiled here, with 31 claimed victims (0.1% of all claims we track).
Its earliest reliably dated claim in our data is 11 September 2021; the latest is 4 November 2021.
Its most-claimed sector is Professional Services, with no strong lean compared with other groups.
BlackMatter activity, last 24 months
Claims per month, by the date our trackers first saw them, so batches can land late. We have almost no collection from June 2025 to March 2026: an empty stretch there means we weren't looking, not that the group was idle. The current month is partial.
Regions targeted
Sectors targeted
Sector and country come from the claim where it states one, otherwise from a rule or language-model label on the victim. Low-confidence sector labels are left out.
Related groups
Ransomware crews share affiliates, tooling, operators and targets; brands fall and reappear under new names. Related to:
Frequently asked questions
Is BlackMatter still active?
Quiet: no claims in our data since 4 November 2021.
How many victims has BlackMatter claimed?
We track 31 victims claimed by BlackMatter on its leak site. Claims are the group's own statements and are not independently verified.
Is BlackMatter sanctioned?
We don't record a specific sanctions designation for BlackMatter. That is not clearance: check current OFAC and UK lists, and take legal advice, before any payment is discussed.
What sectors and regions does BlackMatter target?
In our data BlackMatter most often hits Professional Services, and organisations in US, CA, EG, KR.
Where is BlackMatter believed to be based?
We don't publish an origin attribution for BlackMatter.
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