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
- 616
- last 12 months, every source
- People in US health breaches
- 70.4M
- 475 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 sectorHealthcare752 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 / intrusion796
- Data breach (cause not stated)151
- Unauthorised access or disclosure61
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion796
- Data breach (cause not stated)151
- Unauthorised access or disclosure61
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion796
- Data breach (cause not stated)151
- Unauthorised access or disclosure61
- 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 | 684 | 61 | 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
3,216 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2015-04-01 | Allina Health Isles Clinic | Error / misconfiguration | Healthcare | MN, US | — | VCDB |
| 2015-04-01 | Dublin North Mental Health Services | Error / misconfiguration | Healthcare | GB | 102 records | VCDB |
| 2015-04-01 | Jenifer Peeples | Insider misuse | Healthcare | NJ, US | 1 records | VCDB |
| 2015-04-01 | Mount Sinai Hospital | Insider misuse | Healthcare | IL, US | — | VCDB |
| 2015-04-01 | Oregon's Health CO-OP | Error / misconfiguration | Healthcare | OR, US | — | VCDB |
| 2015-04-01 | Unity Recovery Group | Hacking / intrusion | Healthcare | FL, US | 1,000 records | VCDB |
| 2015-04-01 | University of Rochester Medical Center Affiliates | Insider misuse | Healthcare | NY, US | 3,403 records | VCDB |
| 2015-04-01 | Unnamed organisation | Error / misconfiguration | Healthcare | GB | — | VCDB |
| 2015-04-01 | Wellington Hospital | Insider misuse | Healthcare | GB | 3,200 records | VCDB |
| 2015-03-31 | Heartland Dental | Hacking / intrusion | Healthcare | IL, US | — | VCDB |
| 2015-03-26 | Siouxland Pain Clinic | Hacking / intrusion | Healthcare | US | 13k records | VCDB |
| 2015-03-25 | Southeast Eye Institute, P.A. | Hacking / intrusion | Healthcare | FL, US | 87k records | VCDB |
| 2015-03-24 | Thomas H. Boyd Memorial Hospital | Error / misconfiguration | Healthcare | IL, US | 8,300 records | VCDB |
| 2015-03-23 | Rose House Care Home | Insider misuse | Healthcare | GB | — | VCDB |
| 2015-03-19 | Associated Dentists | Theft or loss | Healthcare | MN, US | — | VCDB |
| 2015-03-05 | Saint Francis Health System | Malware | Healthcare | OK, US | — | VCDB |
| 2015-03-04 | Princess Margaret Cancer Centre | Insider misuse | Healthcare | CA | 1 records | VCDB |
| 2015-03-03 | American Sleep Medicine | Theft or loss | Healthcare | CA, US | 1,787 records | VCDB |
| 2015-03-03 | Louisiana Healthcare Connections | Insider misuse | Healthcare | LA, US | 13k records | VCDB |
| 2015-03-01 | Alaska Orthopedic Specialists | Insider misuse | Healthcare | AK, US | 553 records | VCDB |
| 2015-03-01 | Brighton and Sussex University Hospitals NHS Trust | Error / misconfiguration | Healthcare | GB | 79k records | VCDB |
| 2015-03-01 | Life Choices Community Health Services | Insider misuse | Healthcare | MS, US | — | VCDB |
| 2015-03-01 | Madison Park Senior Community | Theft or loss | Healthcare | OH, US | 1 records | VCDB |
| 2015-03-01 | Royal Cornwall Hospital | Error / misconfiguration | Healthcare | GB | — | VCDB |
| 2015-03-01 | UC Irvine Medical Center | Insider misuse | Healthcare | CA, US | 4,859 records | VCDB |
| 2015-03-01 | Vibrant Body Wellness | Theft or loss | Healthcare | CA, US | 726 records | VCDB |
| 2015-03-01 | Western Montana Clinic | Hacking / intrusion | Healthcare | MT, US | 7,000 records | VCDB |
| 2015-02-19 | Akron General Edwin Shaw Rehabilitation Hospital | Error / misconfiguration | Healthcare | OH, US | 975 records | VCDB |
| 2015-02-19 | Jersey City Medical Center | Error / misconfiguration | Healthcare | NJ, US | 1,400 records | VCDB |
| 2015-02-16 | Main Line Health | Malware | Healthcare | PA, US | 11k records | VCDB |
| 2015-02-13 | San Francisco General Hospital and Trauma Center | Theft or loss | Healthcare | CA, US | 56k records | VCDB |
| 2015-02-11 | Commonwealth Primary Care | Insider misuse | Healthcare | VA, US | — | VCDB |
| 2015-02-02 | Sacred Heart Health Systems | Phishing / social engineering | Healthcare | FL, US | 14k records | VCDB |
| 2015-02-01 | Advantage Dental | Hacking / intrusion | Healthcare | OR, US | 152k records | VCDB |
| 2015-02-01 | Allergy Associates of Hartford, P.C. | Insider misuse | Healthcare | CT, US | 1 records | VCDB |
| 2015-02-01 | Mackenzie Health | Error / misconfiguration | Healthcare | CA | — | VCDB |
| 2015-02-01 | Seton Family of Hospitals | Malware | Healthcare | TX, US | 40k records | VCDB |
| 2015-02-01 | Suburban Lung Associates | Error / misconfiguration | Healthcare | IL, US | — | VCDB |
| 2015-01-29 | Jewish General Hospital | Error / misconfiguration | Healthcare | CA | — | VCDB |
| 2015-01-26 | Blue Chip Dental | Error / misconfiguration | Healthcare | MI, US | 2,200 records | VCDB |
| 2015-01-25 | Uyghur and Tibetan activists | Malware | Healthcare | CN | — | VCDB |
| 2015-01-15 | Bellevue Hospital Center | Insider misuse | Healthcare | NY, US | 3,300 records | VCDB |
| 2015-01-15 | Bellevue Hospital Center | Insider misuse | Healthcare | NY, US | 3,300 records | VCDB |
| 2015-01-15 | Metropolitan Hospital Center | Insider misuse | Healthcare | NY, US | 3,957 records | VCDB |
| 2015-01-08 | Dr. Sharon J. Jones | Theft or loss | Healthcare | CA, US | 350 records | VCDB |
| 2015-01-05 | Cathrine Steinborn, DDS | Theft or loss | Healthcare | CA, US | — | VCDB |
| 2015-01-05 | Unnamed organisation | Insider misuse | Healthcare | FL, US | 1 records | VCDB |
| 2015-01-01 | 56 Dean Street clinic | Error / misconfiguration | Healthcare | GB | 780 records | VCDB |
| 2015-01-01 | Advanced Radiology Consultants | Insider misuse | Healthcare | CT, US | 855 records | VCDB |
| 2015-01-01 | Alberta Health Services | Insider misuse | Healthcare | CA | 2 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 2026-10-14 20:04 UTC.