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
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- 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 | 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
890 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2011-01-01 | ChoicePoint | Phishing / social engineering | Finance & Insurance | GA, US | 38k records | VCDB |
| 2011-01-01 | Euronet Worldwide | Hacking / intrusion | Finance & Insurance | KS, US | — | VCDB |
| 2011-01-01 | FIDELITY INVESTMENTS INSTITUTIONAL OPERATIONS COMPANY, INC. | Hacking / intrusion | Finance & Insurance | MA, US | — | VCDB |
| 2011-01-01 | Highmark Blue Cross/ Blue Shield | Insider misuse | Finance & Insurance | PA, US | — | VCDB |
| 2011-01-01 | Huntington Bank | Insider misuse | Finance & Insurance | SC, US | — | VCDB |
| 2011-01-01 | JPMorgan | Insider misuse | Finance & Insurance | US | — | VCDB |
| 2011-01-01 | Molina Medicare | Unknown | Finance & Insurance | CA, US | 4,573 records | VCDB |
| 2011-01-01 | OneWest Bank FSB | Hacking / intrusion | Finance & Insurance | CA, US | — | VCDB |
| 2011-01-01 | Shopacheck | Error / misconfiguration | Finance & Insurance | GB | 1.4M records | VCDB |
| 2011-01-01 | UK National Health Service | Error / misconfiguration | Finance & Insurance | GB | 1.6M records | VCDB |
| 2010-12-22 | Hospital Auxilio Mutuo | Theft or loss | Finance & Insurance | PR, US | 1,000 records | VCDB |
| 2010-12-10 | Triple-S Salud, Inc. | Theft or loss | Finance & Insurance | PR, US | 8,000 records | VCDB |
| 2010-12-10 | Triple-S Salud, Inc. | Theft or loss | Finance & Insurance | PR, US | 398k records | VCDB |
| 2010-11-17 | Blue Cross and Blue Shield of Michigan | Unknown | Finance & Insurance | MI, US | 2,979 records | VCDB |
| 2010-11-10 | Aetna | Error / misconfiguration | Finance & Insurance | CT, US | 2,345 records | VCDB |
| 2010-11-01 | Chase Bank | Theft or loss | Finance & Insurance | CA, US | 1,100 records | VCDB |
| 2010-10-28 | Keystone/AmeriHealth Mercy Health Plans | Error / misconfiguration | Finance & Insurance | PA, US | 808 records | VCDB |
| 2010-10-16 | Blue Cross and Blue Shield of Florida | Unknown | Finance & Insurance | FL, US | 7,366 records | VCDB |
| 2010-10-07 | UnitedHealth Group | Unknown | Finance & Insurance | MN, US | 1,270 records | VCDB |
| 2010-09-20 | State of Delaware Health Plan | Error / misconfiguration | Finance & Insurance | DE, US | 23k records | VCDB |
| 2010-08-25 | Dominion National | Unknown | Finance & Insurance | US-VA, US | 3.0M records | VCDB |
| 2010-08-20 | Idaho Power Group Health Plan | Error / misconfiguration | Finance & Insurance | ID, US | 5,500 records | VCDB |
| 2010-08-20 | Penn Treaty Network America Insurance Company | Error / misconfiguration | Finance & Insurance | PA, US | 560 records | VCDB |
| 2010-08-18 | Humana Inc. | Error / misconfiguration | Finance & Insurance | KY, US | 2,631 records | VCDB |
| 2010-08-06 | DC Chartered Health Plan, Inc. | Theft or loss | Finance & Insurance | DC, US | 540 records | VCDB |
| 2010-08-06 | WellPoint, Inc. | Hacking / intrusion | Finance & Insurance | IN, US | 32k records | VCDB |
| 2010-08-04 | UnitedHealth Group | Theft or loss | Finance & Insurance | MN, US | 735 records | VCDB |
| 2010-07-29 | Aetna | Error / misconfiguration | Finance & Insurance | CT, US | 6,372 records | VCDB |
| 2010-07-22 | John Deere Health Benefit Plan for Wage Employees | Unknown | Finance & Insurance | IL, US | 1,097 records | VCDB |
| 2010-06-09 | UnitedHealth Group | Error / misconfiguration | Finance & Insurance | MN, US | 16k records | VCDB |
| 2010-06-04 | AvMed, Inc. | Theft or loss | Finance & Insurance | FL, US | 1.2M records | VCDB |
| 2010-06-04 | Omaha Construction Industry Health and Welfare Plan | Theft or loss | Finance & Insurance | NE, US | 800 records | VCDB |
| 2010-06-03 | City of Charlotte Health Plan | Error / misconfiguration | Finance & Insurance | NC, US | 5,220 records | VCDB |
| 2010-05-05 | General Agencies Welfare Benefits Program | Error / misconfiguration | Finance & Insurance | TN, US | 1,874 records | VCDB |
| 2010-05-04 | Blue Cross and Blue Shield of Rhode Island | Error / misconfiguration | Finance & Insurance | RI, US | 12k records | VCDB |
| 2010-04-07 | Cignet Health Center | Error / misconfiguration | Finance & Insurance | MD, US | 4,500 records | VCDB |
| 2010-03-23 | Thrivent Financial for Lutherans | Theft or loss | Finance & Insurance | WI, US | 9,500 records | VCDB |
| 2010-03-21 | Educational Credit Management Corp. | Theft or loss | Finance & Insurance | MN, US | 3.3M records | VCDB |
| 2010-03-04 | Educators Mutual Insurance Association of Utah | Theft or loss | Finance & Insurance | UT, US | 5,700 records | VCDB |
| 2010-03-01 | Educational Credit Management Corporation | Theft or loss | Finance & Insurance | MN, US | 3.3M records | VCDB |
| 2010-02-22 | Blue Cross and Blue Shield Association | Theft or loss | Finance & Insurance | DC, US | 15k records | VCDB |
| 2010-02-22 | Blue Cross and Blue Shield Association | Error / misconfiguration | Finance & Insurance | DC, US | 3,400 records | VCDB |
| 2010-02-22 | Universal American | Error / misconfiguration | Finance & Insurance | NY, US | 83k records | VCDB |
| 2010-01-01 | HealthPartners | Insider misuse | Finance & Insurance | MN, US | 38k records | VCDB |
| 2010-01-01 | MBNA | Theft or loss | Finance & Insurance | GB | — | VCDB |
| 2010-01-01 | Scottrade | Hacking / intrusion | Finance & Insurance | US | — | VCDB |
| 2010-01-01 | Tufts Health Plan | Insider misuse | Finance & Insurance | MA, US | 8,700 records | VCDB |
| 2010-01-01 | Wells Fargo Bank | Insider misuse | Finance & Insurance | CA, US | — | VCDB |
| 2009-12-30 | National Health Service of Central Lancashire | Insider misuse | Finance & Insurance | GB | 6,360 records | VCDB |
| 2009-12-01 | Morgan Stanley | Malware | Finance & Insurance | NY, 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 07:25 UTC.