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
- 613
- last 12 months, every source
- People in US health breaches
- 70.4M
- 473 breaches reported to HHS
- Material incidents, US listed firms
- 23
- SEC 8-K Item 1.05, 12 months
- Accounts in new breach records
- 521.9M
- 125 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 sectorHealthcare748 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 / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- 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 | 681 | 60 | 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
3,212 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2017-08-01 | Par Pharmaceutical | Insider misuse | Healthcare | NJ, US | — | VCDB |
| 2017-08-01 | Penn Medicine | Theft or loss | Healthcare | PA, US | 48 records | VCDB |
| 2017-08-01 | Queen Elizabeth Hospital | Insider misuse | Healthcare | GB | — | VCDB |
| 2017-08-01 | St. Mark’s Surgery Center, LLC | Ransomware | Healthcare | US | 34k records | VCDB |
| 2017-07-31 | Advanced Spine & Pain Center | Hacking / intrusion | Healthcare | TX, US | 8,352 records | VCDB |
| 2017-07-28 | St Helens and Knowsley Teaching Hospitals NHS Trust | Hacking / intrusion | Healthcare | GB | 500 records | VCDB |
| 2017-07-27 | Rivermend Health | Hacking / intrusion | Healthcare | Georgia, US | 1,300 records | VCDB |
| 2017-07-13 | Texas Physician House Calls | Error / misconfiguration | Healthcare | TX, US | 5,000 records | VCDB |
| 2017-07-05 | Caro Community Hospital | Ransomware | Healthcare | US | — | VCDB |
| 2017-07-02 | NHS hospital | Error / misconfiguration | Healthcare | GB | 31 records | VCDB |
| 2017-07-01 | Anesthesia Consultants of Fresno | Theft or loss | Healthcare | CA, US | 40 records | VCDB |
| 2017-07-01 | Queen Elizabeth Hospital | Insider misuse | Healthcare | CA | 3 records | VCDB |
| 2017-07-01 | Ridgeview Medical Center | Error / misconfiguration | Healthcare | Minnesota, US | — | VCDB |
| 2017-07-01 | Shirley Oaks Childrens' Home | Error / misconfiguration | Healthcare | GB | — | VCDB |
| 2017-07-01 | Valley Family Medicine | Insider misuse | Healthcare | VA, US | 8,500 records | VCDB |
| 2017-06-28 | Community Care | Ransomware | Healthcare | CA | — | VCDB |
| 2017-06-22 | Community Memorial Health System | Phishing / social engineering | Healthcare | CA, Unknown | 959 records | VCDB |
| 2017-06-22 | Community Memorial Health System | Hacking / intrusion | Healthcare | CA, US | 960 records | VCDB |
| 2017-06-22 | Helen Devos Children Hospital | Theft or loss | Healthcare | US | — | VCDB |
| 2017-06-21 | Beverly Hills Dougherty Laser Vision | Hacking / intrusion | Healthcare | CA, US | — | VCDB |
| 2017-06-18 | Rocky Mountain Health Care Services | Theft or loss | Healthcare | CO, US | — | VCDB |
| 2017-06-18 | Salina Family Healthcare Center | Error / misconfiguration | Healthcare | US | 9,640 records | VCDB |
| 2017-06-17 | Medical Oncology Hematology Consultants | Ransomware | Healthcare | DE, US | 19k records | VCDB |
| 2017-06-15 | Unnamed organisation | Theft or loss | Healthcare | OH, US | 750 records | VCDB |
| 2017-06-14 | Pacific Alliance Medical Center’s | Ransomware | Healthcare | CA, US | 266k records | VCDB |
| 2017-06-01 | Auburn Eye Care Assoicates | Hacking / intrusion | Healthcare | CA, US | — | VCDB |
| 2017-06-01 | MJHS Home Care | Phishing / social engineering | Healthcare | US | 28k records | VCDB |
| 2017-06-01 | Miramar Medical Center | Error / misconfiguration | Healthcare | NZ | 4 records | VCDB |
| 2017-06-01 | Prince Albert Parkland Health | Insider misuse | Healthcare | CA | 14 records | VCDB |
| 2017-06-01 | Sport and Spine Rehab | Ransomware | Healthcare | MD, US | — | VCDB |
| 2017-06-01 | St Luke’s Hospital | Error / misconfiguration | Healthcare | GB | 1 records | VCDB |
| 2017-06-01 | The institute for Women's Health | Malware | Healthcare | TX, US | — | VCDB |
| 2017-05-24 | Kaleida Health | Phishing / social engineering | Healthcare | New York, US | 2,800 records | VCDB |
| 2017-05-22 | University of Vermont Medical Center | Hacking / intrusion | Healthcare | VT, US | 2,300 records | VCDB |
| 2017-05-20 | Vision Care Specialists | Theft or loss | Healthcare | CO, US | 703 records | VCDB |
| 2017-05-15 | UC Davis Health | Hacking / intrusion | Healthcare | CA, US | — | VCDB |
| 2017-05-15 | Utah Department of Family and Child Services | Hacking / intrusion | Healthcare | Utah, US | 16 records | VCDB |
| 2017-05-12 | Little River Healthcare | Theft or loss | Healthcare | US | 18 records | VCDB |
| 2017-05-08 | Partners HealthCare | Malware | Healthcare | MA, US | 26k records | VCDB |
| 2017-05-03 | Community Link, Inc. | Hacking / intrusion | Healthcare | WI, US | 5,525 records | VCDB |
| 2017-05-03 | Molina Healthcare | Error / misconfiguration | Healthcare | CA, US | — | VCDB |
| 2017-05-01 | Advanced ENT Head & Neck Surgery | Insider misuse | Healthcare | CA, US | — | VCDB |
| 2017-05-01 | BJC HealthCare | Error / misconfiguration | Healthcare | MO, US | 33k records | VCDB |
| 2017-05-01 | Baptist South Medical Center | Error / misconfiguration | Healthcare | FL, US | 531 records | VCDB |
| 2017-05-01 | Broward Health Medical Center | Insider misuse | Healthcare | FL, US | 126 records | VCDB |
| 2017-05-01 | Henry Ford Health System | Theft or loss | Healthcare | MI, US | 596 records | VCDB |
| 2017-05-01 | PVHS-ICM Employee Health and Wellness, LLC | Hacking / intrusion | Healthcare | OH, US | — | VCDB |
| 2017-05-01 | Plymouth Hospitals NHS Trust | Ransomware | Healthcare | GB | — | VCDB |
| 2017-05-01 | Tampa Bay Surgery Center | Unknown | Healthcare | FL, US | 26k records | VCDB |
| 2017-04-24 | Family Tree Health Clinic | Ransomware | Healthcare | US | — | 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 09:54 UTC.