Privacy UnpackedWeekly breach brief
Data breaches in the week of 26 Oct – 1 Nov 2026
134 data breaches on the tracker, 63 confirmed by the organisation or a regulator.
- Breaches
- 134
- Notices in CA and WA
- 12
- Ransomware claims
- 279
- Largest
- 335.0M
The largest
- Binance 335,000,000 users
- Ryohin Keikaku 27,260,000 users Japan
- BK Japan 11,180,000 accounts Japan
- Yumilink 9,000,000 records
- Central Person Register of Denmark 8,800,000 people Denmark
- Joshin 6,230,000 records Japan
Every breach this week, by country
United States 49
- Florida Department of Education reported 29 October 2026 · 4,900,000 people
- Frontline Education 26 October 2026 · 778,372 Texas residents
- Quantum Health, Inc. 28 October 2026 · 273,111 Texas residents
- Marathon Health 30 October 2026 · 234,534 Texas residents
- Revolve Group, Inc. 29 October 2026 · 128,528 people
- Coinbase reported 28 October 2026 · 70,000 users
- U.S. Department of Homeland Security reported 28 October 2026 · 41,000 employees
- Departamento de Seguridad Nacional reported 29 October 2026 · 40,000 workers
- Hippo Analytics Inc. 30 October 2026 · 38,518 Texas residents
- HCA Healthcare, Inc. 30 October 2026 · 15,096 Texas residents
Show 39 more
- Tradier Brokerage Inc. 27 October 2026 · 9,404 Texas residents
- Troutman Pepper Locke LLP 28 October 2026 · 4,194 Texas residents
- Del Monte Foods Corporation II Inc. 29 October 2026 · 3,475 Texas residents
- Johns Hopkins Bayview Medical Center reported 27 October 2026 · 3,100 patients
- Indico Data Solutions 27 October 2026 · 2,128 Texas residents
- Blossom BH Opco Inc. 30 October 2026 · 2,014 Texas residents
- Apollo Asset Management, Inc. 28 October 2026 · 1,543 Texas residents
- Directed Trust Company 27 October 2026 · 1,346 Texas residents
- Trimera Health 30 October 2026 · 1,343 Texas residents
- STP Nuclear Operating Company 28 October 2026 · 1,173 people
- Monmouth University 26 October 2026 · 1,105 Texas residents
- USForex Inc. 26 October 2026 · 1,058 Texas residents
- Henry County Hospital 28 October 2026 · 960 Texas residents
- Metro Tulsa Foot & Ankle Specialist 28 October 2026 · 909 Texas residents
- Baker & McKenzie LLP 27 October 2026 · 831 Texas residents
- Sarasota US Topco, Inc. d/b/a Sarku Japan (“Sarku”) 27 October 2026 · 687 Texas residents
- Gator Town Pediatrics, Family and Urgent Care PLLC 28 October 2026 · 639 Texas residents
- DBA Tanya Alexander 28 October 2026 · 417 Texas residents
- Southeast Colorado Hospital District 28 October 2026 · 375 Texas residents
- Granbury ISD 30 October 2026 · 323 Texas residents
- DMW Retail Enterprises LLC dba Kult of Athena (KOA) 28 October 2026 · 306 Texas residents
- The Vant Group, Inc. 30 October 2026 · 286 Texas residents
- American Campus Communities LLC 30 October 2026 · 252 Texas residents
- Chisholm, Persson & Ball, P.C. 26 October 2026 · 14 Vermont residents
- Alpha Omega Alpha Honor Medical Society 26 October 2026 · 12 Vermont residents
- The Research Foundation for Mental Health, Inc. 29 October 2026 · 4 Vermont residents
- 11252227 Canada Inc. 28 October 2026 · 3 Vermont residents
- CodeSecure Inc. 28 October 2026 · 3 Vermont residents
- BRANDco., LLC 29 October 2026 · 2 Vermont residents
- American Phytopathological Society 28 October 2026 · 2 Vermont residents
- Legacy Cooperative 28 October 2026 · 1 Vermont residents
- Katherine Anger 27 October 2026 · 1 Vermont residents
- Applebee's reported 30 October 2026
- NBCUniversal Media, LLC reported 30 October 2026
- Chainalysis 30 October 2026
- Benworth Capital Partners LLC reported 30 October 2026
- General Motors reported 30 October 2026
- Bangkok Bank PCL - New York Branch 29 October 2026
- Hitec Group USA 27 October 2026
Japan 25
- Ryohin Keikaku reported 30 October 2026 · 27,260,000 users
- BK Japan reported 1 November 2026 · 11,180,000 accounts
- Joshin reported 26 October 2026 · 6,230,000 records
- Club Tourism reported 31 October 2026 · 4,320,000 records
- Sony Network Communications 27 October 2026 · 2,600,000 customer records
- Rakuten Travel 26 October 2026 · 2,600,000 customers
- Sony reported 28 October 2026 · 2,580,000 users
- Sony Life Insurance reported 28 October 2026 · 385,000 customers
- Bandai Namco reported 28 October 2026 · 300,000 users
- Smart EX reported 29 October 2026 · 170,000 users
Show 15 more
- JR East reported 26 October 2026 · 170,000 records
- Japan Airlines reported 28 October 2026 · 92,000 people
- GMO Global Sign reported 1 November 2026 · 45,030 people
- GMO subsidiary reported 1 November 2026 · 45,000 people
- All Nippon Airways Co. reported 30 October 2026 · 37,800 customers
- Shizuoka City reported 26 October 2026 · 10,000 records
- Ministry of Foreign Affairs reported 30 October 2026 · 3,600 records
- Dotour Coffee reported 29 October 2026 · 951 employees
- Aichi Prefecture reported 28 October 2026 · 599 people
- NTT Data reported 31 October 2026 · 362 records
- GMO Internet Group reported 26 October 2026 · 1 customer
- Lifecard reported 29 October 2026
- Gifty reported 29 October 2026
- Bandai Logistics Pal reported 27 October 2026
- Resona 26 October 2026
Country being checked 19
- Binance 29 October 2026 · 335,000,000 users
- Yumilink reported 27 October 2026 · 9,000,000 records
- Educational Testing Service (ETS) reported 29 October 2026 · 5,700,000 students
- World 30 October 2026 · 1,200,000 records
- the airline 31 October 2026 · 53,000 orders
- Ma Déco de Fête reported 31 October 2026 · 13,000 customers
- Rakuten Securities reported 1 November 2026 · 362 records
- JR West Japan reported 31 October 2026 · 2 records
- DEKRA Automotive 1 November 2026
- Cursor reported 31 October 2026
Show 9 more
- Northflank reported 30 October 2026
- Changbi reported 30 October 2026
- FoundationHQ reported 28 October 2026
- Cybertek reported 28 October 2026
- Okayama Marriage Promotion Association reported 27 October 2026
- Warp 27 October 2026
- IFOCOP 26 October 2026
- Genesys 26 October 2026
- Orange reported 26 October 2026
South Korea 9
- Daekyo reported 28 October 2026 · 650,000 members
- Daishin Securities reported 27 October 2026 · 38,490 customers
- KB Kookmin Bank reported 26 October 2026 · 2,210 people
- Jin Air 29 October 2026 · 1,454 members
- Money Today reported 30 October 2026 · 1,367 records
- Bithumb 27 October 2026 · 650 employees
- Hyundai Easywell reported 30 October 2026
- SK Planet 29 October 2026
- Myrealtrip 28 October 2026
France 4
- General Administration of Public Finance reported 29 October 2026 · 678,000 people
- compagnie des transports reported 29 October 2026 · 230,000 accounts
- Bourse Direct reported 31 October 2026 · 800 accounts
- Communauté de communes des Portes du Berry reported 28 October 2026
United Kingdom 4
- UK Biobank reported 26 October 2026 · 500,000 people
- Welsh organizations reported 27 October 2026 · 3,300 people
- Staffordshire Police reported 29 October 2026
- PwC 26 October 2026
Denmark 3
- Central Person Register of Denmark reported 31 October 2026 · 8,800,000 people
- Københavns Universitet reported 28 October 2026 · 525,000 people
- 3 reported 26 October 2026 · 400,000 customers
Moldova 2
- Moldova reported 30 October 2026 · 750,000 people
- Agencia de Gobernanza Electrónica reported 28 October 2026 · 750,000 people
Hong Kong SAR China 2
- Cathay Pacific Airways 28 October 2026 · 53,000 records
- Hong Kong Airlines reported 28 October 2026 · 1,600 customers
Brazil 2
- Prefeitura de Feira de Santana 26 October 2026 · 1,241 people
- Convertr 27 October 2026
Germany 2
- Charité 30 October 2026
- Hochschulservicezentrum Baden-Württemberg 26 October 2026
Indonesia 1
- Fore 28 October 2026 · 5,700,000 accounts
Switzerland 1
- le basket suisse reported 1 November 2026 · 50,000 records
Russia 1
- Rosstat 1 November 2026 · 25,000 computers
Spain 1
- Servicio Extremeño de Salud (SES) reported 29 October 2026 · 18,416 patients
Finland 1
- Eckerö Linen reported 29 October 2026 · 200 people
Netherlands 1
- Bitonic 27 October 2026 · 3 customers
Poland 1
- Szpital Specjalistyczny im. A. Falkiewicza reported 29 October 2026 · 1 patients
India 1
- AU Small Finance Bank reported 30 October 2026
Austria 1
- Feratel reported 30 October 2026
Italy 1
- Abgeordnetenkammer reported 27 October 2026
Belgium 1
- Vanden Broele reported 26 October 2026
Ransomware claims
Gangs named 279 organisations on their leak sites this week, against 224 the week before. A claim is the gang’s word, not a confirmed breach.
- The Gentlemen 50 claims
- Qilin 47 claims
- Booba Project 17 claims
- Whitearmor 14 claims
- Silentransomgroup 12 claims
- Genesis 10 claims
What regulators did
- Reprimand · UK Information Commissioner’s Office · Staffordshire Police The decision 27 October 2026
Every week
- 2–8 November 2026 0 data breaches so far
- 26 Oct – 1 Nov 2026 134 data breaches
- 19–25 October 2026 81 data breaches
- 12–18 October 2026 53 data breaches
- 5–11 October 2026 50 data breaches
- 28 Sept – 4 Oct 2026 68 data breaches
- 21–27 September 2026 66 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 68 data breaches
- 3–9 August 2026 69 data breaches
- 27 Jul – 2 Aug 2026 61 data breaches
- 20–26 July 2026 40 data breaches
- 13–19 July 2026 49 data breaches
- 6–12 July 2026 49 data breaches
- 29 Jun – 5 Jul 2026 50 data breaches
- 22–28 June 2026 56 data breaches
- 15–21 June 2026 38 data breaches
- 8–14 June 2026 49 data breaches
- 1–7 June 2026 60 data breaches
- 25–31 May 2026 55 data breaches
- 18–24 May 2026 51 data breaches
- 11–17 May 2026 61 data breaches
- 4–10 May 2026 54 data breaches
- 27 Apr – 3 May 2026 48 data breaches
- 20–26 April 2026 41 data breaches
- 13–19 April 2026 52 data breaches
- 6–12 April 2026 38 data breaches
- 30 Mar – 5 Apr 2026 44 data breaches
- 23–29 March 2026 62 data breaches
- 16–22 March 2026 46 data breaches
- 9–15 March 2026 51 data breaches
- 2–8 March 2026 42 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 25 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 25 data breaches
- 3–9 November 2025 25 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 14 data breaches
- 29 Sept – 5 Oct 2025 15 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 19 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 18 data breaches
- 21–27 July 2025 17 data breaches
- 14–20 July 2025 24 data breaches
- 7–13 July 2025 15 data breaches
- 30 Jun – 6 Jul 2025 13 data breaches
- 23–29 June 2025 21 data breaches
- 16–22 June 2025 9 data breaches
- 9–15 June 2025 16 data breaches
- 2–8 June 2025 15 data breaches
- 26 May – 1 Jun 2025 6 data breaches
- 19–25 May 2025 19 data breaches
- 12–18 May 2025 16 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 11 data breaches
- 7–13 April 2025 32 data breaches
- 31 Mar – 6 Apr 2025 19 data breaches
- 24–30 March 2025 17 data breaches
- 17–23 March 2025 20 data breaches
- 10–16 March 2025 25 data breaches
- 3–9 March 2025 23 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 21 data breaches
- 20–26 January 2025 11 data breaches
- 13–19 January 2025 17 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 15 data breaches
- 11–17 November 2024 20 data breaches
- 4–10 November 2024 16 data breaches
- 28 Oct – 3 Nov 2024 12 data breaches
- 21–27 October 2024 15 data breaches
- 14–20 October 2024 13 data breaches
- 7–13 October 2024 23 data breaches
- 30 Sept – 6 Oct 2024 17 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 23 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 18 data breaches
- 15–21 July 2024 18 data breaches
- 8–14 July 2024 13 data breaches
- 1–7 July 2024 11 data breaches
- 24–30 June 2024 18 data breaches
- 17–23 June 2024 14 data breaches
- 10–16 June 2024 15 data breaches
- 3–9 June 2024 19 data breaches
- 27 May – 2 Jun 2024 23 data breaches
- 20–26 May 2024 28 data breaches
- 13–19 May 2024 12 data breaches
- 6–12 May 2024 17 data breaches
- 29 Apr – 5 May 2024 21 data breaches
- 22–28 April 2024 13 data breaches
- 15–21 April 2024 19 data breaches
- 8–14 April 2024 14 data breaches
- 1–7 April 2024 20 data breaches
- 25–31 March 2024 27 data breaches
- 18–24 March 2024 31 data breaches
- 11–17 March 2024 14 data breaches
- 4–10 March 2024 15 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 18 data breaches
- 22–28 January 2024 14 data breaches
- 15–21 January 2024 10 data breaches
- 8–14 January 2024 21 data breaches
- 1–7 January 2024 14 data breaches
- 25–31 December 2023 12 data breaches
- 18–24 December 2023 33 data breaches
- 11–17 December 2023 23 data breaches
- 4–10 December 2023 26 data breaches
- 27 Nov – 3 Dec 2023 18 data breaches
- 20–26 November 2023 20 data breaches
- 13–19 November 2023 16 data breaches
- 6–12 November 2023 14 data breaches
- 30 Oct – 5 Nov 2023 17 data breaches
- 23–29 October 2023 14 data breaches
- 16–22 October 2023 15 data breaches
- 9–15 October 2023 15 data breaches
- 2–8 October 2023 21 data breaches
- 25 Sept – 1 Oct 2023 9 data breaches
- 18–24 September 2023 22 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 25 data breaches
- 14–20 August 2023 21 data breaches
- 7–13 August 2023 24 data breaches
- 31 Jul – 6 Aug 2023 20 data breaches
- 24–30 July 2023 37 data breaches
- 17–23 July 2023 26 data breaches
- 10–16 July 2023 27 data breaches
- 3–9 July 2023 10 data breaches
- 26 Jun – 2 Jul 2023 23 data breaches
- 19–25 June 2023 14 data breaches
- 12–18 June 2023 17 data breaches
- 5–11 June 2023 13 data breaches
- 29 May – 4 Jun 2023 10 data breaches
- 22–28 May 2023 18 data breaches
- 15–21 May 2023 18 data breaches
- 8–14 May 2023 14 data breaches
- 1–7 May 2023 8 data breaches
- 24–30 April 2023 18 data breaches
- 17–23 April 2023 11 data breaches
- 10–16 April 2023 18 data breaches
- 3–9 April 2023 13 data breaches
- 27 Mar – 2 Apr 2023 19 data breaches
- 20–26 March 2023 14 data breaches
- 13–19 March 2023 15 data breaches
- 6–12 March 2023 17 data breaches
- 27 Feb – 5 Mar 2023 21 data breaches
- 20–26 February 2023 8 data breaches
- 13–19 February 2023 15 data breaches
- 6–12 February 2023 11 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 10 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.