Privacy Unpacked
Menu

Weekly breach brief

Data breaches in the week of 14–20 September 2026

57 data breaches on the tracker, 57 confirmed by the organisation or a regulator.

Breaches
57
Notices in CA and WA
13
Ransomware claims
212
Largest
970,403

The largest

  1. Paradigm Healthcare Services 970,403 patients United States
  2. Tarter Krinsky & Drogin LLP 196,645 patients United States
  3. Clover Health 138,677 patients United States
  4. Opportune LLP 128,106 people United States
  5. AngMar Management Services 126,196 patients United States
  6. Westchester Ellenville Hospital dba Ellenville Regional Hospital 73,304 people United States

Every breach this week, by country

United States 57

Ransomware claims

Gangs named 212 organisations on their leak sites this week, against 176 the week before. A claim is the gang’s word, not a confirmed breach.

Every week

Follow the brief: one entry a week (Atom). The 2026 report has the year so far.

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.