Threat group
Organisations Umbra has claimed on its leak site or that reporting links to it, newest first. A claim stays a claim until the organisation or a regulator says otherwise.
Organisations linked, last 12 months
Updated 13 Nov 2026, 12:58 UTC, 33 of 36 sources answering. History from 13 Nov 2025.
Where a group operates from is rarely sourced, so the map never draws a line from one.
Every item here rests on the group's own leak site. None has been confirmed by the organisation named or by a regulator yet.
Leak-site claims tracked by RansomLook (ransomlook.io), CC BY 4.0, enriched by Black Shard.
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