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
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion77%
- Data breach (cause not stated)15%
- Unauthorised access or disclosure6%
- Ransomware1%
- Infostealer logs0%
- Credential compilation (no single victim)0%
- 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 | |||||
| Transportation | 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 |
|---|---|---|---|---|---|---|
| 2010-10-05 | Milton Pathology Associates, PC (Milton Hospital, Inc.) | Error / misconfiguration | Healthcare | MA, US | 11k records | VCDB |
| 2010-10-01 | Counseling and Psychotherapy of Throggs Neck | Theft or loss | Healthcare | NY, US | 9,000 records | VCDB |
| 2010-10-01 | Knox Community Hospital | Error / misconfiguration | Healthcare | OH, US | 500 records | VCDB |
| 2010-10-01 | Matthew H. Conrad, MD, PA | Theft or loss | Healthcare | KS, US | 1,200 records | VCDB |
| 2010-10-01 | Milford Regional Medical Center | Error / misconfiguration | Healthcare | MA, US | 20k records | VCDB |
| 2010-10-01 | New York Presbyterian Hospital and Columbia University Medical Center | Error / misconfiguration | Healthcare | NY, US | 6,800 records | VCDB |
| 2010-10-01 | St. James Hospital and Health Centers | Error / misconfiguration | Healthcare | IL, US | 967 records | VCDB |
| 2010-10-01 | St. Vincent Hospital and Health Care Center, Inc. | Theft or loss | Healthcare | IN, US | 1,199 records | VCDB |
| 2010-10-01 | University of Oklahoma-Tulsa, Neurology Clinic | Hacking / intrusion | Healthcare | OK, US | 19k records | VCDB |
| 2010-09-29 | University of Massachusetts Health Services | Unknown | Healthcare | MA, US | 942 records | VCDB |
| 2010-09-28 | Indiana Regional Medical Center | Theft or loss | Healthcare | PA, US | 1,388 records | VCDB |
| 2010-09-21 | Ault Chiropractic Center | Theft or loss | Healthcare | IN, US | 2,000 records | VCDB |
| 2010-09-21 | University of Rochester Medical Center | Error / misconfiguration | Healthcare | NY, US | 857 records | VCDB |
| 2010-09-20 | Curtis R. Bryan, MD | Theft or loss | Healthcare | VA, US | 2,739 records | VCDB |
| 2010-09-20 | Kent Center | Theft or loss | Healthcare | RI, US | 1,361 records | VCDB |
| 2010-09-20 | LabCorp Patient Service Center | Theft or loss | Healthcare | NV, US | 507 records | VCDB |
| 2010-09-20 | Mayo Clinic | Insider misuse | Healthcare | MN, US | 1,740 records | VCDB |
| 2010-09-20 | Pediatric and Adult Allergy, PC | Error / misconfiguration | Healthcare | IA, US | 19k records | VCDB |
| 2010-09-10 | Newark Beth Israel Medical Center | Error / misconfiguration | Healthcare | NJ, US | 956 records | VCDB |
| 2010-09-10 | Saint Barnabas Medical Center | Error / misconfiguration | Healthcare | NJ, US | 3,630 records | VCDB |
| 2010-09-10 | SunBridge Healthcare Corporation | Theft or loss | Healthcare | NM, US | 1,000 records | VCDB |
| 2010-09-09 | Stanford University Medical Center | Error / misconfiguration | Healthcare | CA, US | 20k records | VCDB |
| 2010-09-06 | Vitalit Health Network | Insider misuse | Healthcare | NB, CA | 142 records | VCDB |
| 2010-09-01 | Baylor College of Medicine/Texas Children's Hospital | Theft or loss | Healthcare | TX, US | 694 records | VCDB |
| 2010-09-01 | Chattanooga Family Practice Associates, PC | Error / misconfiguration | Healthcare | TN, US | 1,711 records | VCDB |
| 2010-09-01 | Cook County Health & Hospitals System | Theft or loss | Healthcare | IL, US | 7,081 records | VCDB |
| 2010-09-01 | Eastmoreland Surgical Clinic | Theft or loss | Healthcare | OR, US | 4,328 records | VCDB |
| 2010-09-01 | Holyoke Medical Center | Error / misconfiguration | Healthcare | MA, US | 25k records | VCDB |
| 2010-08-20 | Aultman Hospital | Theft or loss | Healthcare | OH, US | 14k records | VCDB |
| 2010-08-20 | St. John's Mercy Medical Group | Error / misconfiguration | Healthcare | MO, US | 1,907 records | VCDB |
| 2010-08-20 | UNCG Speech and Hearing Center | Hacking / intrusion | Healthcare | NC, US | 2,300 records | VCDB |
| 2010-08-20 | Ward A. Morris, DDS | Theft or loss | Healthcare | WA, US | 2,698 records | VCDB |
| 2010-08-18 | Beauty Dental, Inc. | Theft or loss | Healthcare | IL, US | 657 records | VCDB |
| 2010-08-18 | Carolina Center for Development and Rehabilitation | Error / misconfiguration | Healthcare | NC, US | 1,590 records | VCDB |
| 2010-08-18 | Fort Worth Allergy and Asthma Associates | Theft or loss | Healthcare | TX, US | 25k records | VCDB |
| 2010-08-18 | Jewish Hospital | Theft or loss | Healthcare | KY, US | 2,089 records | VCDB |
| 2010-08-18 | Thomas Jefferson University Hospitals, Inc. | Theft or loss | Healthcare | PA, US | 21k records | VCDB |
| 2010-08-07 | Cavan Monaghan General Hospital | Insider misuse | Healthcare | IE | 300 records | VCDB |
| 2010-08-06 | Montefiore Medical Center | Theft or loss | Healthcare | NY, US | 17k records | VCDB |
| 2010-08-06 | Montefiore Medical Center | Theft or loss | Healthcare | NY, US | 24k records | VCDB |
| 2010-08-04 | Charles Mitchell, MD | Theft or loss | Healthcare | TX, US | 6,873 records | VCDB |
| 2010-08-03 | Central Brooklyn Medical Group, PC/Preferred Health Partners | Theft or loss | Healthcare | NY, US | 500 records | VCDB |
| 2010-08-01 | Galleria Woods senior living center | Insider misuse | Healthcare | GA, US | 1 records | VCDB |
| 2010-07-30 | Texas Children's Hospital | Theft or loss | Healthcare | TX, US | 694 records | VCDB |
| 2010-07-29 | Medina County OB/GYN Associates, Inc. | Error / misconfiguration | Healthcare | OH, US | 1,200 records | VCDB |
| 2010-07-21 | Prince William County Community Services | Theft or loss | Healthcare | VA, US | 669 records | VCDB |
| 2010-07-21 | South Shore Medical Center | Error / misconfiguration | Healthcare | MA, US | 800k records | VCDB |
| 2010-07-19 | Long Island Consultation Center | Error / misconfiguration | Healthcare | NY, US | 800 records | VCDB |
| 2010-07-19 | NYU Hospital Center | Error / misconfiguration | Healthcare | NY, US | 2,563 records | VCDB |
| 2010-07-19 | Wilkins E. Brooks Family Medicine, PA | Insider misuse | Healthcare | NC, US | 13k 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 20:33 UTC.