Privacy UnpackedWeekly breach brief
Data breaches in the week of 18–24 March 2024
31 data breaches on the tracker, 31 confirmed by the organisation or a regulator.
- Breaches
- 31
- Notices in CA and WA
- 32
- Largest
- 49.1M
The largest
- AT&T Inc. 49,102,176 accounts United States
- MediaWorks 162,710 accounts New Zealand
Every breach this week, by country
United States 30
- AT&T Inc. 19 March 2024 · 49,102,176 accounts
- Select Education Group 21 March 2024 · 67,097 Oregon residents
- Lewis and Clark College 22 March 2024 · 48,799 Oregon residents
- GardaWorld Cash U.S. 22 March 2024 · 39,928 Oregon residents
- Bethel School District 18 March 2024 · 28,645 Washington residents
- V12 Software, Inc. 18 March 2024 · 11,151 Washington residents
- Fox Specialties Inc. Trading As Encompass Elements 22 March 2024 · 1,601 Washington residents
- Oregon Taxi, Deluxe Taxi Transportation, and Direct Medical Transportation 22 March 2024 · 1,147 Oregon residents
- Axiom Construction and Consulting 20 March 2024 · 1,127 Washington residents
- Dial Temporary Help Service, Inc. dba Employers Overload 19 March 2024 · 1,113 Oregon residents
- CJ Eateries 22 March 2024 · 879 Oregon residents
- Monmouth College 20 March 2024 · 677 Washington residents
- Nationstar Mortgage (dba Mr. Cooper) 22 March 2024
- California Department of Food and Agriculture 22 March 2024
- I.A.T.S.E. Staff Retirement and National Pension Funds 22 March 2024
- Health Plan Intermediaries Holdings 22 March 2024
- LOS ANGELES COUNTY DEPARTMENT OF MENTAL HEALTH 22 March 2024
- Santa Clarita Community College District 22 March 2024
- Pomona Valley Hospital Medical Center 22 March 2024
- M&D Capital Premier Billing LLC 21 March 2024
- Simpson Strong-Tie Co. Inc. 21 March 2024
- Massachusetts Mutual Life Insurance Company 21 March 2024
- Radiant Logistics, Inc 20 March 2024
- Woodruff-Sawyer & Co. 20 March 2024
- Schuster Company 19 March 2024
- Fiduciary Outsourcing, LLC 19 March 2024
- Eastside Union School District 18 March 2024
- Jordano’s Inc. 18 March 2024
- Gresser Inc. and Affiliates 18 March 2024
- Johnson Matthey, Inc. 18 March 2024
New Zealand 1
- MediaWorks 22 March 2024 · 162,710 accounts
What regulators did
- Enforcement notice · UK Information Commissioner’s Office · Home Office The decision 21 March 2024
- Reprimand · UK Information Commissioner’s Office · Birmingham Children's Trust Community Interest Company The decision 18 March 2024
Every week
- 26 Oct – 1 Nov 2026 67 data breaches so far
- 19–25 October 2026 80 data breaches
- 12–18 October 2026 54 data breaches
- 5–11 October 2026 48 data breaches
- 28 Sept – 4 Oct 2026 68 data breaches
- 21–27 September 2026 67 data breaches
- 14–20 September 2026 71 data breaches
- 7–13 September 2026 46 data breaches
- 31 Aug – 6 Sept 2026 61 data breaches
- 24–30 August 2026 59 data breaches
- 17–23 August 2026 56 data breaches
- 10–16 August 2026 67 data breaches
- 3–9 August 2026 69 data breaches
- 27 Jul – 2 Aug 2026 60 data breaches
- 20–26 July 2026 39 data breaches
- 13–19 July 2026 50 data breaches
- 6–12 July 2026 49 data breaches
- 29 Jun – 5 Jul 2026 49 data breaches
- 22–28 June 2026 56 data breaches
- 15–21 June 2026 40 data breaches
- 8–14 June 2026 49 data breaches
- 1–7 June 2026 57 data breaches
- 25–31 May 2026 54 data breaches
- 18–24 May 2026 50 data breaches
- 11–17 May 2026 61 data breaches
- 4–10 May 2026 53 data breaches
- 27 Apr – 3 May 2026 48 data breaches
- 20–26 April 2026 41 data breaches
- 13–19 April 2026 51 data breaches
- 6–12 April 2026 38 data breaches
- 30 Mar – 5 Apr 2026 44 data breaches
- 23–29 March 2026 61 data breaches
- 16–22 March 2026 46 data breaches
- 9–15 March 2026 51 data breaches
- 2–8 March 2026 41 data breaches
- 23 Feb – 1 Mar 2026 50 data breaches
- 16–22 February 2026 45 data breaches
- 9–15 February 2026 50 data breaches
- 2–8 February 2026 46 data breaches
- 26 Jan – 1 Feb 2026 48 data breaches
- 19–25 January 2026 24 data breaches
- 12–18 January 2026 47 data breaches
- 5–11 January 2026 48 data breaches
- 29 Dec – 4 Jan 2026 30 data breaches
- 22–28 December 2025 24 data breaches
- 15–21 December 2025 26 data breaches
- 8–14 December 2025 28 data breaches
- 1–7 December 2025 20 data breaches
- 24–30 November 2025 12 data breaches
- 17–23 November 2025 32 data breaches
- 10–16 November 2025 24 data breaches
- 3–9 November 2025 24 data breaches
- 27 Oct – 2 Nov 2025 14 data breaches
- 20–26 October 2025 11 data breaches
- 13–19 October 2025 13 data breaches
- 6–12 October 2025 13 data breaches
- 29 Sept – 5 Oct 2025 16 data breaches
- 22–28 September 2025 14 data breaches
- 15–21 September 2025 18 data breaches
- 8–14 September 2025 18 data breaches
- 1–7 September 2025 9 data breaches
- 25–31 August 2025 18 data breaches
- 18–24 August 2025 14 data breaches
- 11–17 August 2025 11 data breaches
- 4–10 August 2025 11 data breaches
- 28 Jul – 3 Aug 2025 17 data breaches
- 21–27 July 2025 16 data breaches
- 14–20 July 2025 24 data breaches
- 7–13 July 2025 15 data breaches
- 30 Jun – 6 Jul 2025 14 data breaches
- 23–29 June 2025 21 data breaches
- 16–22 June 2025 9 data breaches
- 9–15 June 2025 15 data breaches
- 2–8 June 2025 15 data breaches
- 26 May – 1 Jun 2025 5 data breaches
- 19–25 May 2025 19 data breaches
- 12–18 May 2025 15 data breaches
- 5–11 May 2025 20 data breaches
- 28 Apr – 4 May 2025 15 data breaches
- 21–27 April 2025 15 data breaches
- 14–20 April 2025 10 data breaches
- 7–13 April 2025 29 data breaches
- 31 Mar – 6 Apr 2025 19 data breaches
- 24–30 March 2025 17 data breaches
- 17–23 March 2025 19 data breaches
- 10–16 March 2025 25 data breaches
- 3–9 March 2025 22 data breaches
- 24 Feb – 2 Mar 2025 61 data breaches
- 17–23 February 2025 11 data breaches
- 10–16 February 2025 14 data breaches
- 3–9 February 2025 15 data breaches
- 27 Jan – 2 Feb 2025 20 data breaches
- 20–26 January 2025 11 data breaches
- 13–19 January 2025 16 data breaches
- 6–12 January 2025 17 data breaches
- 30 Dec – 5 Jan 2025 7 data breaches
- 23–29 December 2024 9 data breaches
- 16–22 December 2024 23 data breaches
- 9–15 December 2024 18 data breaches
- 2–8 December 2024 12 data breaches
- 25 Nov – 1 Dec 2024 7 data breaches
- 18–24 November 2024 14 data breaches
- 11–17 November 2024 18 data breaches
- 4–10 November 2024 16 data breaches
- 28 Oct – 3 Nov 2024 13 data breaches
- 21–27 October 2024 14 data breaches
- 14–20 October 2024 13 data breaches
- 7–13 October 2024 22 data breaches
- 30 Sept – 6 Oct 2024 16 data breaches
- 23–29 September 2024 11 data breaches
- 16–22 September 2024 15 data breaches
- 9–15 September 2024 12 data breaches
- 2–8 September 2024 15 data breaches
- 26 Aug – 1 Sept 2024 22 data breaches
- 19–25 August 2024 16 data breaches
- 12–18 August 2024 14 data breaches
- 5–11 August 2024 17 data breaches
- 29 Jul – 4 Aug 2024 15 data breaches
- 22–28 July 2024 15 data breaches
- 15–21 July 2024 18 data breaches
- 8–14 July 2024 13 data breaches
- 1–7 July 2024 10 data breaches
- 24–30 June 2024 17 data breaches
- 17–23 June 2024 14 data breaches
- 10–16 June 2024 16 data breaches
- 3–9 June 2024 19 data breaches
- 27 May – 2 Jun 2024 20 data breaches
- 20–26 May 2024 26 data breaches
- 13–19 May 2024 12 data breaches
- 6–12 May 2024 17 data breaches
- 29 Apr – 5 May 2024 20 data breaches
- 22–28 April 2024 14 data breaches
- 15–21 April 2024 19 data breaches
- 8–14 April 2024 14 data breaches
- 1–7 April 2024 19 data breaches
- 25–31 March 2024 24 data breaches
- 18–24 March 2024 31 data breaches
- 11–17 March 2024 14 data breaches
- 4–10 March 2024 14 data breaches
- 26 Feb – 3 Mar 2024 28 data breaches
- 19–25 February 2024 15 data breaches
- 12–18 February 2024 12 data breaches
- 5–11 February 2024 17 data breaches
- 29 Jan – 4 Feb 2024 17 data breaches
- 22–28 January 2024 14 data breaches
- 15–21 January 2024 11 data breaches
- 8–14 January 2024 21 data breaches
- 1–7 January 2024 13 data breaches
- 25–31 December 2023 12 data breaches
- 18–24 December 2023 32 data breaches
- 11–17 December 2023 22 data breaches
- 4–10 December 2023 25 data breaches
- 27 Nov – 3 Dec 2023 17 data breaches
- 20–26 November 2023 19 data breaches
- 13–19 November 2023 14 data breaches
- 6–12 November 2023 13 data breaches
- 30 Oct – 5 Nov 2023 17 data breaches
- 23–29 October 2023 13 data breaches
- 16–22 October 2023 15 data breaches
- 9–15 October 2023 15 data breaches
- 2–8 October 2023 19 data breaches
- 25 Sept – 1 Oct 2023 9 data breaches
- 18–24 September 2023 21 data breaches
- 11–17 September 2023 14 data breaches
- 4–10 September 2023 14 data breaches
- 28 Aug – 3 Sept 2023 27 data breaches
- 21–27 August 2023 23 data breaches
- 14–20 August 2023 17 data breaches
- 7–13 August 2023 24 data breaches
- 31 Jul – 6 Aug 2023 20 data breaches
- 24–30 July 2023 38 data breaches
- 17–23 July 2023 25 data breaches
- 10–16 July 2023 22 data breaches
- 3–9 July 2023 10 data breaches
- 26 Jun – 2 Jul 2023 23 data breaches
- 19–25 June 2023 11 data breaches
- 12–18 June 2023 16 data breaches
- 5–11 June 2023 11 data breaches
- 29 May – 4 Jun 2023 9 data breaches
- 22–28 May 2023 18 data breaches
- 15–21 May 2023 15 data breaches
- 8–14 May 2023 14 data breaches
- 1–7 May 2023 9 data breaches
- 24–30 April 2023 17 data breaches
- 17–23 April 2023 11 data breaches
- 10–16 April 2023 17 data breaches
- 3–9 April 2023 12 data breaches
- 27 Mar – 2 Apr 2023 18 data breaches
- 20–26 March 2023 13 data breaches
- 13–19 March 2023 14 data breaches
- 6–12 March 2023 17 data breaches
- 27 Feb – 5 Mar 2023 21 data breaches
- 20–26 February 2023 7 data breaches
- 13–19 February 2023 15 data breaches
- 6–12 February 2023 9 data breaches
- 30 Jan – 5 Feb 2023 15 data breaches
- 23–29 January 2023 12 data breaches
- 16–22 January 2023 14 data breaches
- 9–15 January 2023 10 data breaches
- 2–8 January 2023 8 data breaches
- 26 Dec – 1 Jan 2023 2 data breaches
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.