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Weekly breach brief

Data breaches in the week of 24–30 August 2026

52 data breaches on the tracker, 52 confirmed by the organisation or a regulator.

Breaches
52
Notices in CA and WA
15
Ransomware claims
240
Largest
12.9M

The largest

  1. Carhartt 12,933,413 accounts United States
  2. Healthfirst Bluegrass, Inc. 139,834 people United States
  3. Bell American Group LLC 115,346 people United States
  4. Issaqueena Pediatric Dentistry 91,250 people United States
  5. Osceola Mental Health Inc. dba Park Place Behavioral Healthcare 71,702 patients United States
  6. RB American Group LLC 66,608 people United States

Every breach this week, by country

United States 52

Ransomware claims

Gangs named 240 organisations on their leak sites this week, against 276 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.