Breaches & incidents
The victims' side of the threat pictureWho is being attacked
Data breaches and cyber incidents made public — reported to regulators, disclosed by the companies themselves, or catalogued after a leak. Who was hit, when, how, and how many people or accounts were affected.
- Incidents disclosed
- 618
- last 12 months, every source
- People in US health breaches
- 70.5M
- 477 breaches reported to HHS
- Material incidents, US listed firms
- 23
- SEC 8-K Item 1.05, 12 months
- Accounts in new breach records
- 522.5M
- 126 breaches added to HIBP
Coverage. Mostly the United States: the cleanest public records of named victims come from US regulators. Ransomware victims worldwide, India included, are on the ransomware victims page. Every count is a lower bound — only disclosed incidents appear.
1Key findings
- Most common attackHacking / intrusion78% of named-victim incidents in the last 24 months
- Most targeted sectorHealthcare754 incidents in the last 24 months
- Most people affectedConduent Business Services LLC62.2M people · 8 Oct 2025
- Most accounts exposed1win96.2M accounts · 2 Nov 2024
- Named most oftenFieldtex Products, Inc.in 5 disclosures, 20 Nov 2025 – 12 Dec 2025
- Latest disclosurePark Dental Partners, Inc.Hacking / intrusion · 7 Oct 2026 · SEC 8-K
2Trends
The last 24 months, dated when the incident happened where the source says, otherwise when it was reported.
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion77%
- Data breach (cause not stated)15%
- Unauthorised access or disclosure6%
- Ransomware1%
- Credential compilation (no single victim)0%
- Infostealer logs0%
- Theft or loss0%
- Error / misconfiguration0%
3Sectors
Who the incidents hit, where the source names a sector, and how each sector was attacked.
- In healthcare, 91% of incidents were hacking / intrusion.
| Hacking / intrusion | Data breach (cause not stated) | Unauthorised access or disclosure | Ransomware | Theft or loss | Error / misconfiguration | |
|---|---|---|---|---|---|---|
| Healthcare | 685 | 62 | 2 | 4 | 1 | |
| Information | 25 | 3 | ||||
| Manufacturing | 20 | 1 | ||||
| Professional Services | 18 | 1 | ||||
| Retail | 17 | 1 | ||||
| Finance, Insurance & Real Estate | 6 | |||||
| Services | 5 | |||||
| Technology | 4 |
4Largest incidents
The last 24 months. People and accounts are counted apart: an account list can hold one person many times. Credential compilations, which name no victim, are left out.
- 1Conduent Business Services LLC62.2M people
- 2DentaQuest, LLC15.0M people
- 3Aflac Incorporated (“Aflac”)13.9M people
- 4Aesto, LLC9.5M people
- 5Episource, LLC6.7M people
- 6AdaptHealth, LLC4.1M people
- 7Unlimited Technology Systems, LLC3.8M people
- 8CareCloud, Inc.3.8M people
- 11win96.2M accounts
- 2Under Armour72.7M accounts
- 3Suno55.3M accounts
- 4Canadian Tire38.3M accounts
- 5Addi34.5M accounts
- 6SoundCloud29.8M accounts
- 7Speedio27.5M accounts
- 8Paidwork23.3M accounts
5Hit more than once
Organisations named in more than one disclosure in the last 5 years (30 in all). That can be separate attacks, or one incident reported to more than one place — a regulator and investors, or on behalf of several clients.
| Organisation | Disclosures | First – latest | Types of attack | Sources |
|---|---|---|---|---|
| Fieldtex Products, Inc. · Healthcare | 5 | 20 Nov 2025 – 12 Dec 2025 | Hacking / intrusion | HHS |
| AltaMed Health Services Corporation · Healthcare | 3 | 1 Jun 2023 – 26 Feb 2026 | Hacking / intrusionRansomwareUnauthorised access or disclosure | HHS, VCDB |
| United Healthcare Student Resources · Finance & Insurance | 3 | 1 Jun 2023 – 1 Jun 2023 | Ransomware | VCDB |
| DentaQuest, LLC · Healthcare | 2 | 23 May 2026 – 16 Jul 2026 | Data breach (cause not stated)Hacking / intrusion | HHS, HIBP |
| CarMax · Retail | 2 | 2 May 2025 – 24 Jan 2026 | Data breach (cause not stated)Hacking / intrusion | HIBP, VCDB |
| Park Dental Partners, Inc. · Healthcare | 2 | 28 Aug 2026 – 7 Oct 2026 | Hacking / intrusion | SEC 8-K |
| WindRose Health Network · Healthcare | 2 | 27 Jan 2026 – 16 Sept 2026 | Hacking / intrusion | HHS |
| AdaptHealth, LLC · Healthcare | 2 | 27 Jun 2026 – 14 Aug 2026 | Hacking / intrusion | HHS, SEC 8-K |
| CareCloud, Inc. · Healthcare | 2 | 24 Mar 2026 – 24 Jul 2026 | Hacking / intrusion | HHS, SEC 8-K |
| Clinical Registry Solutions · Healthcare | 2 | 9 Apr 2026 – 12 Jun 2026 | Hacking / intrusion | HHS, VCDB |
| Open Arms Care Corporation · Healthcare | 2 | 1 Jun 2025 – 11 Jun 2026 | Hacking / intrusion | HHS, VCDB |
| Gastro Health · Healthcare | 2 | 22 May 2026 – 22 May 2026 | Hacking / intrusion | HHS |
6All incidents
3,218 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2012-07-03 | Memorial Sloan-Kettering Cancer Center | Error / misconfiguration | Healthcare | NY, US | 568 records | VCDB |
| 2012-07-03 | Physician's Automated Laboratory | Theft or loss | Healthcare | CA, US | 745 records | VCDB |
| 2012-07-03 | Robert Witham, MD, FACP | Theft or loss | Healthcare | WA, US | 11k records | VCDB |
| 2012-07-03 | Temple Community Hospital | Theft or loss | Healthcare | CA, US | 603 records | VCDB |
| 2012-07-03 | Titus Regional Medical Center | Theft or loss | Healthcare | TX, US | 500 records | VCDB |
| 2012-07-03 | Volunteer State Health Plan, Inc. | Error / misconfiguration | Healthcare | TN, US | 1,102 records | VCDB |
| 2012-07-03 | West Dermatology | Theft or loss | Healthcare | CA, US | 1,900 records | VCDB |
| 2012-07-01 | Lahey Clinic | Theft or loss | Healthcare | MA, US | — | VCDB |
| 2012-07-01 | Providence Health & Services | Insider misuse | Healthcare | OR, US | 5,400 records | VCDB |
| 2012-06-29 | Gulf Coast Health Care Services Inc | Theft or loss | Healthcare | FL, US | 13k records | VCDB |
| 2012-06-22 | Karen Kietzman | Theft or loss | Healthcare | MT, US | 708 records | VCDB |
| 2012-06-20 | California Correctional Health Care Services | Error / misconfiguration | Healthcare | CA, US | — | VCDB |
| 2012-06-16 | Sharon L. Rogers, PhD, ABPP | Theft or loss | Healthcare | TX, US | 585 records | VCDB |
| 2012-06-14 | Apria Healthcare | Theft or loss | Healthcare | CA, US | 66k records | VCDB |
| 2012-06-08 | IU Medical Group | Error / misconfiguration | Healthcare | IN, US | 1,000 records | VCDB |
| 2012-06-08 | IntraCare North Hospital | Theft or loss | Healthcare | TX, US | 741 records | VCDB |
| 2012-06-08 | Our Lady of the Lake Regional Medical Center | Error / misconfiguration | Healthcare | LA, US | 17k records | VCDB |
| 2012-06-08 | Rex Smith, DPM -Rex Smith Podiatry | Theft or loss | Healthcare | OR, US | 21k records | VCDB |
| 2012-06-08 | St. Mary Medical Center | Error / misconfiguration | Healthcare | CA, US | 3,900 records | VCDB |
| 2012-06-04 | Metcare of Florida, Inc. | Theft or loss | Healthcare | FL, US | 2,557 records | VCDB |
| 2012-06-01 | ACLD Inc. | Insider misuse | Healthcare | NY, US | 1 records | VCDB |
| 2012-06-01 | Adults and Children with learning and Developmental Disabilities, Inc | Theft or loss | Healthcare | NY, US | 1 records | VCDB |
| 2012-06-01 | Kindred Healthcare Inc d/b/a Kindred Transitional Care And Rehabilititation Sellersburg | Theft or loss | Healthcare | IN, US | 1,504 records | VCDB |
| 2012-06-01 | Louisiana State University | Insider misuse | Healthcare | LA, US | 400 records | VCDB |
| 2012-05-29 | NHS Surrey | Error / misconfiguration | Healthcare | GB | 3,000 records | VCDB |
| 2012-05-29 | National Health Service Surrey | Error / misconfiguration | Healthcare | GB | 3,000 records | VCDB |
| 2012-05-27 | Visiting Nurse Services of Iowa | Theft or loss | Healthcare | IA, US | 1,298 records | VCDB |
| 2012-05-23 | NYU Langone Medical Center | Theft or loss | Healthcare | NY, US | 8,500 records | VCDB |
| 2012-05-22 | Beth Israel Deaconess Medical Center | Theft or loss | Healthcare | MA, US | 3,900 records | VCDB |
| 2012-05-22 | Beth Israel Deaconess Medical Center | Theft or loss | Healthcare | MA, US | 3,900 records | VCDB |
| 2012-05-21 | St. Mark's Medical Center | Malware | Healthcare | TX, US | 2,988 records | VCDB |
| 2012-05-21 | St. Mark's Medical Center | Malware | Healthcare | TX, US | 2,998 records | VCDB |
| 2012-05-21 | St. Marks Medical Center | Malware | Healthcare | TX, US | — | VCDB |
| 2012-05-21 | University of New Mexico Health Sciences Center | Hacking / intrusion | Healthcare | NM, US | 2,365 records | VCDB |
| 2012-05-17 | Molalla Family Dental | Hacking / intrusion | Healthcare | OR, US | 4,354 records | VCDB |
| 2012-05-14 | Family HealthServices Minnesota, P.A. | Theft or loss | Healthcare | MN, US | 4,000 records | VCDB |
| 2012-05-10 | DRD Management, Inc. D/B/A DRD Knoxville Medical Clinic - Central | Error / misconfiguration | Healthcare | TN, US | 1,000 records | VCDB |
| 2012-05-10 | Dental Office | Insider misuse | Healthcare | US | — | VCDB |
| 2012-05-10 | Jeffrey Paul Edelstein MD | Theft or loss | Healthcare | AZ, US | 4,800 records | VCDB |
| 2012-05-10 | Memorial Healthcare System | Theft or loss | Healthcare | FL, US | 9,497 records | VCDB |
| 2012-05-10 | Neighborhood Christian Clinic | Error / misconfiguration | Healthcare | AZ, US | 9,565 records | VCDB |
| 2012-05-10 | Rhinebeck Health Center/Center for Progressive Medicine | Hacking / intrusion | Healthcare | NY, US | 6,745 records | VCDB |
| 2012-05-10 | Roy E. Gondo, MD | Theft or loss | Healthcare | WA, US | 2,100 records | VCDB |
| 2012-05-07 | Brentwood Primary Care Clinic | Insider misuse | Healthcare | FL, US | 261 records | VCDB |
| 2012-05-07 | Shands Jacksonville clinic | Insider misuse | Healthcare | FL, US | 261 records | VCDB |
| 2012-05-03 | Gessler Clinic, PA | Theft or loss | Healthcare | FL, US | 1,400 records | VCDB |
| 2012-05-01 | Apex Laboratory, Inc | Insider misuse | Healthcare | FL, US | 1,300 records | VCDB |
| 2012-05-01 | First Choice Home Health Care Services Inc. | Insider misuse | Healthcare | MI, US | — | VCDB |
| 2012-05-01 | Highlands-Cashiers Hospital | Error / misconfiguration | Healthcare | NC, US | 25k records | VCDB |
| 2012-05-01 | NHS Surrey | Error / misconfiguration | Healthcare | GB | 3,000 records | VCDB |
Sources: US HHS breach portal, SEC EDGAR, Have I Been Pwned (CC BY 4.0) and the VERIS Community Database (CC BY-SA 4.0). Updated 2026-10-15 12:58 UTC.