Privacy Unpacked

Ransomware gang

Chaos

Claims on its leak site since 31 March 2025, number 32 of all gangs in the last 12 months

Claims, 12 months
77
Last 30 days
5
All claims
97
Last claim
23 October 2026
01020Nov 24: 0 claimsDec 24: 0 claimsJan 25: 0 claimsFeb 25: 0 claimsMar 25: 4 claimsApr 25: 2 claimsMay 25: 1 claimsJun 25: 3 claimsJul 25: 0 claimsAug 25: 1 claimsSept 25: 2 claimsOct 25: 8 claimsNov 25: 3 claimsDec 25: 7 claimsJan 26: 2 claimsFeb 26: 3 claimsMar 26: 6 claimsApr 26: 5 claimsMay 26: 9 claimsJun 26: 6 claimsJul 26: 15 claimsAug 26: 8 claimsSept 26: 9 claimsOct 26: 3 claims so farNov 24Jan 25Jan 26
Chaos’s claims per month, last 2 years. The last bar is the month so far.

Where its claimed victims are

  • United States6971%
  • United Kingdom55%
  • Canada44%
  • Germany44%
  • Australia22%
  • Russia22%
  • Taiwan11%
  • Netherlands11%

Sectors

  • Manufacturing1920%
  • Technology1920%
  • Professional Services1515%
  • Healthcare1010%
  • Retail & E-Commerce66%
  • Transportation66%
  • Financial Services66%
  • Agriculture and Food Production33%

Claims matched to an official notice

5 organisations Chaos claimed also filed a breach notice with a regulator, all of them after the claim (a median of 71 days later). Matched by name: the notice does not say who the attacker was.

  1. Healthcare Highways, LLC
    Claimed 4 August 2026 · notice filed with the Texas Attorney General 6 October 2026
  2. NSE Insurance Agencies
    Claimed 11 December 2025 · notice filed with the Indiana Attorney General 21 September 2026
  3. Opportune LLP
    Claimed 8 July 2026 · notice filed with the Indiana Attorney General 17 September 2026
  4. Horizon Media
    Claimed 9 February 2026 · notice filed with the California Attorney General 6 May 2026
  5. Optima Tax Relief, LLC
    Claimed 6 June 2025 · notice filed with the California Attorney General 15 August 2025

What a claim is, and is not

A claim is a ransomware gang naming an organisation on its leak site, usually to pressure it into paying. It is the gang’s word: some claims are false, recycled from older breaches or exaggerated, and a claim says nothing about whose personal data, if any, was taken. That is why we count claims but do not list the organisations, and why a breach goes on the tracker as confirmed only when the organisation or a regulator says so.

How this is counted

Claims as collected from the gangs’ leak sites by ransomware.live, which says itself that they are unverified. We read its list every day and keep only counts: by month, by the victim’s country and by sector (as ransomware.live classifies them). Matches with official notices are by the organisation’s name, from 30 days before the claim to a year after it, against California’s and Washington’s full breach registers and every official notice on the tracker. A match is not a confirmation rate: those registers only see breaches of their own residents, and names are written differently. We never link to or visit leak sites.

Every gang →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Found a mistake? Tell us and we correct it.