Home › Ransomware

H

Helldown Ransomware

A data-only profile of Helldown, 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

33

Status

Quiet

Last 30 days

0

Top region

United States

Top sector

Professional Services

What the data says

Helldown ranks #101 of the 122 groups profiled here, with 33 claimed victims (0.1% of all claims we track).

Its earliest reliably dated claim in our data is 19 August 2024; the latest is 18 November 2024.

Its most-claimed sector is Professional Services, with no strong lean compared with other groups.

44% of its claims with a known country are in the United States.

Helldown activity, last 24 months

no collection2025-022025-052025-082025-112026-022026-052026-082026-11

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

United States 11Germany 3Switzerland 2Italy 2France 2Poland 2United Kingdom 1Canada 1

Sectors targeted

Professional Services 5Healthcare 5Manufacturing 4Transportation 2Technology 2Financial Services 2

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 Helldown still active?

Quiet: no claims in our data since 18 November 2024.

How many victims has Helldown claimed?

We track 33 victims claimed by Helldown on its leak site. Claims are the group's own statements and are not independently verified.

Is Helldown sanctioned?

We don't record a specific sanctions designation for Helldown. That is not clearance: check current OFAC and UK lists, and take legal advice, before any payment is discussed.

What sectors and regions does Helldown target?

In our data Helldown most often hits Professional Services, and organisations in US, DE, CH, IT.

Where is Helldown believed to be based?

We don't publish an origin attribution for Helldown.

More analysis on the Ninja Labz blog, and new victims every morning in the Daily.

Track it daily

Ransomware moves every day. So does our paper.

The Probably Fine Daily is our morning threat-intelligence briefing — new victims, new groups, what actually matters, in plain English. Free.

Read today's Daily →Browse the archive

Defender-oriented threat intelligence. Nothing here assists an attack. Attribution and lineage reflect open-source reporting.

← All ransomware groups