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Weekly breach brief

Data breaches in the week of 9–15 March 2026

51 data breaches on the tracker, 51 confirmed by the organisation or a regulator.

Breaches
51
Notices in CA and WA
7
Ransomware claims
166
Largest
1.3M

The largest

  1. Baydöner 1,266,822 accounts
  2. Nacogdoches Memorial Hospital 257,073 people United States
  3. Divine Skins 105,814 accounts
  4. UFCW Local 342 et al 56,615 people United States
  5. Teamsters Local 175 27,162 people United States
  6. MetroWest Community Federal Credit Union 20,722 people United States

Every breach this week, by country

United States 49

Country being checked 2

Ransomware claims

Gangs named 166 organisations on their leak sites this week, against 223 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 · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.