Ransomware gang
Everest
Claims on its leak site since 9 September 2021, number 15 of all gangs in the last 12 months
- Claims, 12 months
- 157
- Last 30 days
- 25
- All claims
- 430
- Last claim
- 27 October 2026
Where its claimed victims are
Sectors
Claims matched to an official notice
8 organisations Everest claimed also filed a breach notice with a regulator, 7 of them after the claim (a median of 182 days later). Matched by name: the notice does not say who the attacker was.
- Citizens Bank
Claimed 20 April 2026 · notice filed with the California Attorney General 19 October 2026 - Accela, Inc.
Claimed 23 December 2025 · notice filed with the California Attorney General 14 September 2026 - La Perouse LLC
Claimed 8 August 2025 · notice filed with the California Attorney General 28 May 2026 - Frost Bank
Claimed 20 April 2026 · notice filed with the California Attorney General 20 May 2026 - Fishman, Larsen & Callister, P.C.
Claimed 24 June 2025 · notice filed with the California Attorney General 12 February 2026 - New American Funding, LLC
Claimed 15 July 2025 · notice filed with the California Attorney General 11 July 2025 - Pacific Pulmonary Medical Group
Claimed 25 October 2024 · notice filed with the California Attorney General 3 January 2025 - Stiiizy, Inc.
Claimed 24 November 2024 · notice filed with the Washington Attorney General 20 December 2024
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.
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.