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 |
|---|---|---|---|---|---|---|
| 2017-04-20 | Cleveland Medical Associates | Ransomware | Healthcare | OH, US | 22k records | VCDB |
| 2017-04-20 | Cleveland Medical Associates | Ransomware | Healthcare | TN, US | — | VCDB |
| 2017-04-17 | Torrance Memorial Medical Center | Hacking / intrusion | Healthcare | CA, US | — | VCDB |
| 2017-04-14 | Chris O'Brien Lighthouse (hospital) | Insider misuse | Healthcare | AU | 700 records | VCDB |
| 2017-04-14 | Cove Family and Sports Medicine | Ransomware | Healthcare | AL, US | 4,300 records | VCDB |
| 2017-04-08 | Southwest Community Health Center | Theft or loss | Healthcare | CT, US | — | VCDB |
| 2017-04-01 | Erie County Medical Center | Ransomware | Healthcare | NY, US | — | VCDB |
| 2017-04-01 | Midland Regional Hospital | Error / misconfiguration | Healthcare | GB | 2 records | VCDB |
| 2017-04-01 | Midland Regional Hospital | Error / misconfiguration | Healthcare | GB | 1 records | VCDB |
| 2017-04-01 | Prairie Mountain Health | Hacking / intrusion | Healthcare | CA, Unknown | 1,629 records | VCDB |
| 2017-04-01 | Saint Thomas Health | Error / misconfiguration | Healthcare | TN, US | 2,859 records | VCDB |
| 2017-04-01 | The Neurology Foundation, Inc. | Insider misuse | Healthcare | RI, US | 13k records | VCDB |
| 2017-03-23 | Children’s Mercy Kansas City | Insider misuse | Healthcare | MO, US | 5,511 records | VCDB |
| 2017-03-23 | Surgical Dermatology Group | Hacking / intrusion | Healthcare | Alabama, US | — | VCDB |
| 2017-03-21 | CoxHealth | Theft or loss | Healthcare | MO, US | 80 records | VCDB |
| 2017-03-01 | ACM Global Laboratory | Insider misuse | Healthcare | NY, US | — | VCDB |
| 2017-03-01 | Beacon Health System | Insider misuse | Healthcare | IN, US | — | VCDB |
| 2017-03-01 | Clearfield County Children and Youth Family Services | Error / misconfiguration | Healthcare | US | — | VCDB |
| 2017-03-01 | Colonial Gardens Alzheimer’s Special Care Center | Insider misuse | Healthcare | SC, US | — | VCDB |
| 2017-03-01 | Cook County Health and Hospitals System | Error / misconfiguration | Healthcare | IL, US | 727 records | VCDB |
| 2017-03-01 | John Fawkner Private Hospital | Error / misconfiguration | Healthcare | AU | 31 records | VCDB |
| 2017-03-01 | Pembroke House Surgery | Error / misconfiguration | Healthcare | GB | 1,000 records | VCDB |
| 2017-03-01 | Trios Health | Insider misuse | Healthcare | WA, US | 569 records | VCDB |
| 2017-02-25 | Lifespan Healthcare | Theft or loss | Healthcare | Rhode Island, US | 20k records | VCDB |
| 2017-02-22 | Meridian Health Services | Phishing / social engineering | Healthcare | IN, US | 1,200 records | VCDB |
| 2017-02-17 | Lexington Medical Center | Hacking / intrusion | Healthcare | SC, US | — | VCDB |
| 2017-02-13 | Southern Illinois Healthcare | Error / misconfiguration | Healthcare | IL, US | — | VCDB |
| 2017-02-12 | Plastic Surgery Associates of South Dakota | Ransomware | Healthcare | SD, US | 10k records | VCDB |
| 2017-02-07 | Western Health Screening | Theft or loss | Healthcare | MT, US | 15k records | VCDB |
| 2017-02-06 | ABCD Pediatrics | Ransomware | Healthcare | TX, US | 55k records | VCDB |
| 2017-02-06 | Sharp Healthcare | Theft or loss | Healthcare | CA, US | 750 records | VCDB |
| 2017-02-01 | Adventist Health Tehachapi Valley | Phishing / social engineering | Healthcare | US | 253 records | VCDB |
| 2017-02-01 | Associates in Family Chiropractic and Natural Health Care | Insider misuse | Healthcare | CT, US | — | VCDB |
| 2017-02-01 | Children’s Hospital of Eastern Ontario | Insider misuse | Healthcare | CA | 283 records | VCDB |
| 2017-02-01 | Citizens Memorial Hospital | Phishing / social engineering | Healthcare | MO, US | — | VCDB |
| 2017-02-01 | Martin Memorial Health Systems | Insider misuse | Healthcare | FL, US | 1 records | VCDB |
| 2017-02-01 | Northern Territory Radiation Oncology | Error / misconfiguration | Healthcare | AU | 24 records | VCDB |
| 2017-02-01 | Sarnia General Hospital | Error / misconfiguration | Healthcare | CA | — | VCDB |
| 2017-02-01 | Solent NHS Trust | Insider misuse | Healthcare | GB | 2 records | VCDB |
| 2017-01-30 | Eastern Health | Insider misuse | Healthcare | CA | 122 records | VCDB |
| 2017-01-30 | Pointe Coupee General | Phishing / social engineering | Healthcare | US | 200 records | VCDB |
| 2017-01-25 | Campbell County Health | Phishing / social engineering | Healthcare | WY, US | 1,456 records | VCDB |
| 2017-01-25 | LCS-WP LLC d/b/a Walnut Place | Ransomware | Healthcare | TX, US | 5,000 records | VCDB |
| 2017-01-25 | Walnut Place | Ransomware | Healthcare | Unknown | — | VCDB |
| 2017-01-22 | Austin Urology | Ransomware | Healthcare | TX, US | 1 records | VCDB |
| 2017-01-12 | Sound Community Services | Hacking / intrusion | Healthcare | CT, US | 1,279 records | VCDB |
| 2017-01-11 | Little Red Door | Ransomware | Healthcare | IN, US | — | VCDB |
| 2017-01-01 | Gallup Indian Medical Center | Insider misuse | Healthcare | NM, US | 1 records | VCDB |
| 2017-01-01 | St John Ambulance | Insider misuse | Healthcare | NZ | 1 records | VCDB |
| 2017-01-01 | Always Best Senior Care Services | Insider misuse | Healthcare | PA, 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 10:32 UTC.