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Ransomware leak tracker.

Who ransomware groups are claiming to have breached, from two independent trackers of their leak sites. Unverified criminal claims, not confirmed breaches: an early signal to go and check, never a finding. Get alerts when something on your watch list is claimed. We do not record what you look up.

Tracking 183 claims across 32 groups, 171 of them in the last seven days.

Read this before you act on anything here

A listing means a criminal group has said it holds data from an organisation. It does not mean a breach happened, that the data is real, or that it is recent.

Groups fabricate. In April 2026 the group 0APT listed rival gangs as victims; the claims were invented. Removing them turned a reported 15% quarterly rise in attacks into a 6% fall.
Groups recycle. CISA has documented actors buying previously stolen data to re-extort. One study found 98 listings covering only 49 distinct victims.
Attribution is often wrong. Suppliers get listed as their customers, and shared domains get listed as the wrong organisation entirely.
It undercounts. The NCSC notes victims who pay never appear on a leak site at all.

Where two independent trackers carried the same claim we mark it 2 sources. That means two crawlers saw the same post, not that anyone verified it.

We publish the claim only. We do not link to leak sites, mirror screenshots, or carry any pointer to stolen data. If you are listed here and believe it is wrong, or you want the entry removed, tell us and we will act on it.

None of this is our research. The crawling is done by RansomLook, Ransomfeed and ransomware.live, and we are grateful for it. Please go to them for the full picture.

Claims by coinbase cartel

Organisation named	Group claiming	Claimed	Where	Sources
CEN and Cenelec NEW Membership Organizations - $21.9 Million	coinbase cartel	2026-08-02	—	ransomlook
MIM Fertility NEW Healthcare Software - $10.5 Million	coinbase cartel	2026-08-02	—	ransomlook
M. B. Kahn Construction Co. NEW Construction - $500 Million	coinbase cartel	2026-08-02	—	ransomlook
Xs Cad NEW Architecture - $26.9 Million	coinbase cartel	2026-08-02	—	ransomlook
CEN and Cenelec cencenelec.eu [AI generated] CEN (European Committee for Standardization) and CENELEC (European Committee for Electrotechnical Standardization) are European standardization organizations headquartered in Brussels, Belgium. They develop and publish voluntary technical standa...	coinbasecartel	2026-08-01	Belgium, International organizations	ransomfeed
MIM Fertility mimfertility.ai [AI generated] MIM Fertility is a US-based fertility clinic network specializing in reproductive medicine and assisted reproductive technologies. The company provides services such as in vitro fertilization, egg freezing, preimplantation genetic testing, and f...	coinbasecartel	2026-08-01	USA, Healthcare services	ransomfeed
M. B. Kahn Construction Co. mbkahn.com [AI generated] M. B. Kahn Construction Co. is a general contracting and construction management firm based in the United States, headquartered in Columbia, South Carolina. Founded in 1926, the company operates primarily across the southeastern United States. I...	coinbasecartel	2026-08-01	USA, Construction	ransomfeed
Xs Cad xscad.com [AI generated] N/A	coinbasecartel	2026-08-01	UK, Engineering consulting	ransomfeed

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Sources: RansomLook (CC BY 4.0, synced 2026-08-05 09:15 UTC), Ransomfeed (CC BY 4.0, synced 2026-08-05 09:15 UTC) and ransomware.live (PRO licence, synced 2026-08-05 09:15 UTC), each used under the licence shown and refreshed a few times a day. They crawl the groups' Tor leak sites; we never do, and we store no .onion address, magnet link or leak-site screenshot. Listings are the claims of criminals and are the sole responsibility of their authors; nothing here is verified, and nothing here is advice. This site stores no personal data about what you look up.