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Weekly breach brief

Data breaches in the week of 17–23 August 2026

53 data breaches on the tracker, 53 confirmed by the organisation or a regulator.

Breaches
53
Notices in CA and WA
21
Ransomware claims
276
Largest
2.0M

The largest

  1. Oz Hair and Beauty 1,988,331 accounts Australia
  2. Golf Canada 568,972 accounts Canada
  3. Apple American Group LLC and Apple American Group II, LLC 282,573 people United States
  4. Premier Medical Group of the Hudson Valley P.C. 282,075 patients United States
  5. Fanlore 144,520 accounts
  6. ASOS US Sales LLC 138,828 people United States

Every breach this week, by country

United States 50

Australia 1

Canada 1

Country being checked 1

  • Fanlore 19 August 2026 · 144,520 accounts

Ransomware claims

Gangs named 276 organisations on their leak sites this week, against 272 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.