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Weekly breach brief

Data breaches in the week of 15–21 June 2026

40 data breaches on the tracker, 40 confirmed by the organisation or a regulator.

Breaches
40
Notices in CA and WA
10
Ransomware claims
211
Largest
56.3M

The largest

  1. June 2026 Stealer Logs 56,278,397 accounts
  2. AssuranceAmerica Managing General Agency, LLC 6,998,886 people United States
  3. JCPenney 368,418 accounts
  4. Berkadia 305,216 accounts
  5. CFGI 248,235 accounts
  6. Ralph Lauren 139,903 accounts

Every breach this week, by country

United States 34

Country being checked 6

Ransomware claims

Gangs named 211 organisations on their leak sites this week, against 203 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.