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

3Sectors

Who the incidents hit, where the source names a sector, and how each sector was attacked.

Most affected sectorsLast 24 months. Select one to list its incidents.
  1. Healthcare748
  2. Information28
  3. Manufacturing21
  4. Professional Services19
  5. Retail18
  6. Finance, Insurance & Real Estate6
  7. Services5
  8. Technology4
  9. Transportation4
  10. Accommodation & Food3
  11. Administrative3
  12. Finance & Insurance2
Sector against type of attackIncidents per sector (rows) and attack type (columns). Darker means more.
  • In healthcare, 91% of incidents were hacking / intrusion.
Hacking / intrusionData breach (cause not stated)Unauthorised access or disclosureRansomwareTheft or lossError / misconfiguration
Healthcare68160241
Information253
Manufacturing201
Professional Services181
Retail171
Finance, Insurance & Real Estate6
Services5
Technology4

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.

By people affected
  1. 1
    Conduent Business Services LLC62.2M people
    8 Oct 2025 · Hacking / intrusion · Healthcare · HHS
  2. 2
    DentaQuest, LLC15.0M people
    16 Jul 2026 · Hacking / intrusion · Healthcare · HHS
  3. 3
    Aflac Incorporated (“Aflac”)13.9M people
    8 Aug 2025 · Hacking / intrusion · Healthcare · HHS
  4. 4
    Aesto, LLC9.5M people
    31 Jul 2026 · Hacking / intrusion · Healthcare · HHS
  5. 5
    Episource, LLC6.7M people
    6 Jun 2025 · Hacking / intrusion · Healthcare · HHS
  6. 6
    AdaptHealth, LLC4.1M people
    14 Aug 2026 · Hacking / intrusion · Healthcare · HHS
  7. 7
    Unlimited Technology Systems, LLC3.8M people
    21 Jul 2026 · Hacking / intrusion · Healthcare · HHS
  8. 8
    CareCloud, Inc.3.8M people
    24 Jul 2026 · Hacking / intrusion · Healthcare · HHS
By accounts exposed
  1. 1
    1win96.2M accounts
    2 Nov 2024 · Data breach (cause not stated) · HIBP
  2. 2
    Under Armour72.7M accounts
    17 Nov 2025 · Data breach (cause not stated) · HIBP
  3. 3
    Suno55.3M accounts
    25 Nov 2025 · Data breach (cause not stated) · HIBP
  4. 4
    Canadian Tire38.3M accounts
    2 Oct 2025 · Data breach (cause not stated) · HIBP
  5. 5
    Addi34.5M accounts
    25 Mar 2026 · Data breach (cause not stated) · HIBP
  6. 6
    SoundCloud29.8M accounts
    15 Dec 2025 · Data breach (cause not stated) · HIBP
  7. 7
    Speedio27.5M accounts
    24 Dec 2024 · Data breach (cause not stated) · HIBP
  8. 8
    Paidwork23.3M accounts
    29 Mar 2026 · Data breach (cause not stated) · HIBP

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.

OrganisationDisclosuresFirst – latestTypes of attackSources
Fieldtex Products, Inc. · Healthcare520 Nov 2025 – 12 Dec 2025Hacking / intrusionHHS
AltaMed Health Services Corporation · Healthcare31 Jun 2023 – 26 Feb 2026Hacking / intrusionRansomwareUnauthorised access or disclosureHHS, VCDB
United Healthcare Student Resources · Finance & Insurance31 Jun 2023 – 1 Jun 2023RansomwareVCDB
DentaQuest, LLC · Healthcare223 May 2026 – 16 Jul 2026Data breach (cause not stated)Hacking / intrusionHHS, HIBP
CarMax · Retail22 May 2025 – 24 Jan 2026Data breach (cause not stated)Hacking / intrusionHIBP, VCDB
Park Dental Partners, Inc. · Healthcare228 Aug 2026 – 7 Oct 2026Hacking / intrusionSEC 8-K
WindRose Health Network · Healthcare227 Jan 2026 – 16 Sept 2026Hacking / intrusionHHS
AdaptHealth, LLC · Healthcare227 Jun 2026 – 14 Aug 2026Hacking / intrusionHHS, SEC 8-K
CareCloud, Inc. · Healthcare224 Mar 2026 – 24 Jul 2026Hacking / intrusionHHS, SEC 8-K
Clinical Registry Solutions · Healthcare29 Apr 2026 – 12 Jun 2026Hacking / intrusionHHS, VCDB
Open Arms Care Corporation · Healthcare21 Jun 2025 – 11 Jun 2026Hacking / intrusionHHS, VCDB
Gastro Health · Healthcare222 May 2026 – 22 May 2026Hacking / intrusionHHS

6All incidents

Clear

3,212 incidents match, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2024-10-18Clay Platte Family MedicineHacking / intrusionHealthcareMO, US54k peopleHHS
2024-10-18Detroit Wayne Integrated Health NetworkHacking / intrusionHealthcareMI, US3,347 peopleHHS
2024-10-18RRCA Accounts Management Inc.Hacking / intrusionHealthcareIL, US116k peopleHHS
2024-10-18Summit Pathology and Summit Pathology Laboratories, Inc.Hacking / intrusionHealthcareCO, US1.8M peopleHHS
2024-10-11Wilmington Community ClinicHacking / intrusionHealthcareCA, US12k peopleHHS
2024-08-27CODAC Inc dba CODAC Behavioral Health and CODAC Healthcare, LLCHacking / intrusionHealthcareRI, US9,592 peopleHHS
2024-07-19Community Counseling of Bristol County, Inc.Hacking / intrusionHealthcareMA, US45k peopleHHS
2024-07-02Regional Obstetrical Consultants PCHacking / intrusionHealthcareTN, US26k peopleHHS
2024-05-02Medical Express Ambulance Inc. D/B/A Medex AmbulanceHacking / intrusionHealthcareIL, US121k peopleHHS
2024-02-06Bradford Health Services, LLCHacking / intrusionHealthcareAL, US29k peopleHHS
2023-11-02Claxton-Hepburn Medical CenterHacking / intrusionHealthcareNY, US757 peopleHHS
2023-10-12Premier Health Partners and wholly owned covered entities listed in description section belowHacking / intrusionHealthcareOH, US11k peopleHHS
2023-09-01Unnamed North American medical research institutionMalwareHealthcareUnknown—VCDB
2023-06-01AltaMed Health ServicesRansomwareHealthcareCA, US—VCDB
2023-06-01Harris Center for Mental Health and IDDRansomwareHealthcareTX, US—VCDB
2023-06-01Rochester HospitalRansomwareHealthcareNY, US—VCDB
2023-06-01Saint Francis Health SystemRansomwareHealthcareOK, US—VCDB
2023-06-01UofL HealthRansomwareHealthcareKY, US—VCDB
2022-03-19Carolina Behavioral Health Alliance, LLCRansomwareHealthcareCA, US130k recordsVCDB
2022-03-19Partnership HealthPlan of California RansomwareHealthcareCA, US850k recordsVCDB
2021-07-12DuPage Medical GroupHacking / intrusionHealthcareIL, US600k recordsVCDB
2021-06-01Epilepsy Foundation of TexasHacking / intrusionHealthcareTX, US2,824 recordsVCDB
2021-05-24Spine & Disc Medical CenterRansomwareHealthcareAZ, US—VCDB
2021-04-21 Centre François BaclesseRansomwareHealthcareFR—VCDB
2021-03-01Heart of Texas Community Health Center Insider misuseHealthcareTX, US—VCDB
2021-03-01MCG HealthHacking / intrusionHealthcareWA, US1.1M recordsVCDB
2021-02-25Achievement Center of LECOM Health (ACLH)Hacking / intrusionHealthcarePA, US—VCDB
2021-02-10Penn FoundationRansomwareHealthcarePA, US—VCDB
2021-02-08Wolfe Eye ClinicRansomwareHealthcareIA, US500k recordsVCDB
2021-01-20Personal-Touch Holding corpRansomwareHealthcareNY, US759k recordsVCDB
2021-01-13Cochise Eye and Laser RansomwareHealthcareAZ, US100k recordsVCDB
2021-01-01Hearing Care networkHacking / intrusionHealthcareFL, US32.0M recordsVCDB
2021-01-01Phetchabun HospitalHacking / intrusionHealthcareTH105k recordsVCDB
2021-01-01Prestera Center for Mental Health ServicesHacking / intrusionHealthcareWV, US3,720 recordsVCDB
2021-01-01Siriraj HospitalHacking / intrusionHealthcareTH39.0M recordsVCDB
2020-12-09Elara CaringHacking / intrusionHealthcareTX, US100k recordsVCDB
2020-11-27Unnamed organisationInsider misuseHealthcareBR, BR16.0M recordsVCDB
2020-11-09Cedar Springs Hospital Error / misconfigurationHealthcareCO, US—VCDB
2020-10-11Dental Care AllianceHacking / intrusionHealthcareFL, US1.0M recordsVCDB
2020-10-09Sonoma Valley HospitalRansomwareHealthcareCA, US—VCDB
2020-09-07San Juan Medical CenterHacking / intrusionHealthcareUS500 recordsVCDB
2020-09-01Centers for Advanced OrthopaedicsHacking / intrusionHealthcareMD, US125k recordsVCDB
2020-09-01United Health Services, Inc.RansomwareHealthcareUS—VCDB
2020-08-31Anglicare SydneyRansomwareHealthcareAU—VCDB
2020-08-27Planned Parenthood of Metropolitan Washington DCHacking / intrusionHealthcareDC, US—VCDB
2020-08-26Manitoba Children's Disability ServicesError / misconfigurationHealthcareMB, CA9,001 recordsVCDB
2020-08-06Shields Healthcare GroupError / misconfigurationHealthcareMA, US—VCDB
2020-08-01Managed Isolation and Quarantine, Ministry of Business, Innovation & Employment:Insider misuseHealthcareNZ—VCDB
2020-08-01Medisys Health GroupRansomwareHealthcareCA60k recordsVCDB
2020-07-02Moffitt Cancer CenterTheft or lossHealthcareFL, US4,000 recordsVCDB

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 05:15 UTC.