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
70.5M
477 breaches reported to HHS
Material incidents, US listed firms
21
SEC 8-K Item 1.05, 12 months
Accounts in new breach records
504.9M
124 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 sectorHealthcare756 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. Healthcare756
  2. Information28
  3. Manufacturing21
  4. Professional Services19
  5. Retail18
  6. Finance, Insurance & Real Estate6
  7. Services5
  8. Transportation4
  9. Technology4
  10. Accommodation & Food3
  11. Administrative3
  12. Other Services2
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
Healthcare68762241
Information253
Manufacturing201
Professional Services181
Retail171
Finance, Insurance & Real Estate6
Services5
Transportation4

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

11,849 incidents, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2017-10-26MyHeritage myheritage.comData breach (cause not stated)——92.0M accountsHIBP
2017-10-25Alameda County librariesHacking / intrusionInformationCA, US—VCDB
2017-10-25Geauga County, OHInsider misusePublic AdministrationOH, US—VCDB
2017-10-25Springfield Credit UnionTheft or lossFinance & InsuranceMA, US—VCDB
2017-10-25UAB MedicineError / misconfigurationHealthcareAL, US652 recordsVCDB
2017-10-24 Green CrushInsider misuseAccommodation & FoodCA, US1 recordsVCDB
2017-10-23Bukalapak bukalapak.comData breach (cause not stated)——13.4M accountsHIBP
2017-10-23Circle KTheft or lossRetailTN, US—VCDB
2017-10-23GreatBanc Trust CompanyHacking / intrusionFinance & InsuranceTX, US—VCDB
2017-10-19Ameris BankTheft or lossFinance & InsuranceFL, US—VCDB
2017-10-17HomeplusHacking / intrusionRetailKR-11, KR49k recordsVCDB
2017-10-14Sheetz Gas StationTheft or lossRetailUS—VCDB
2017-10-07Clarion UniversityHacking / intrusionEducationPA, US410 recordsVCDB
2017-10-05Dudley Group NHS Foundation TrustTheft or lossHealthcareGB—VCDB
2017-10-04CrunchyrollMalwareInformationCA, US—VCDB
2017-10-03Bathurst Jean Coutu DrugstoreInsider misuseRetailCA1 recordsVCDB
2017-10-03CCRM MinneapolisRansomwareHealthcareMN, US3,300 recordsVCDB
2017-10-03CVS Theft or lossRetailMI, US—VCDB
2017-10-03Henry Ford Health SystemHacking / intrusionHealthcareMI, US18k recordsVCDB
2017-10-02Sinai Health SystemHacking / intrusionHealthcareIL, US11k recordsVCDB
2017-10-01 Austin Manual Therapy AssociatesHacking / intrusionHealthcareTX, US1,750 recordsVCDB
2017-10-01 Revolution Event Design & Production Insider misuseAccommodation & FoodUS—VCDB
2017-10-01API Americas IncInsider misuseWholesaleKS, US—VCDB
2017-10-01AppleInsider misuseWholesaleUS—VCDB
2017-10-01Baber Psychiatric GroupError / misconfigurationHealthcareIL, US11k recordsVCDB
2017-10-01Baptist HealthHacking / intrusionHealthcareTX, US881 recordsVCDB
2017-10-01Carolina Oncology SpecialistsUnknownHealthcareNC, US1,551 recordsVCDB
2017-10-01Chemours Insider misuseProfessional ServicesDE, US—VCDB
2017-10-01Citizens BankTheft or lossFinance & InsuranceUS—VCDB
2017-10-01DHI Group IncHacking / intrusionInformationNY, US—VCDB
2017-10-01ExpediaMalwareAdministrativeFL, US8.8M recordsVCDB
2017-10-01Far Eastern International Bank MalwareFinance & InsuranceUM—VCDB
2017-10-01Federal Teachers Credit Union Theft or lossFinance & InsuranceIN, US—VCDB
2017-10-01Gloucestershire HospitalError / misconfigurationHealthcareGB-GLS, GB56 recordsVCDB
2017-10-01Grafton Road ExxonTheft or lossRetailWV, US—VCDB
2017-10-01Greenworks MedicinalError / misconfigurationRetailGB250 recordsVCDB
2017-10-01Hay River Regional Health CentreError / misconfigurationHealthcareCA41 recordsVCDB
2017-10-01India State GovermentInsider misusePublic AdministrationUnknown—VCDB
2017-10-01JobStreet.comHacking / intrusionAdministrativeMY4.0M recordsVCDB
2017-10-01Johnston School District Hacking / intrusionEducationIA, US—VCDB
2017-10-01Legendas.TV legendas.tvData breach (cause not stated)——3.9M accountsHIBP
2017-10-01London Bridge Plastic Surgery ClinicHacking / intrusionHealthcareGB—VCDB
2017-10-01Lukes One Stop gas stationTheft or lossRetailIndiana, US—VCDB
2017-10-01Lukes One Stop gas station Theft or lossRetailIN, US—VCDB
2017-10-01Midland Regional HospitalError / misconfigurationHealthcareGB1 recordsVCDB
2017-10-01Mobil Gas StationTheft or lossRetailFlorida, US—VCDB
2017-10-01NFLRansomwareEntertainmentNY, US—VCDB
2017-10-01Rogue Federal Credit UnionTheft or lossFinance & InsuranceOR, US—VCDB
2017-10-01Seidl's Party Supplies & RentalsTheft or lossReal EstateCA, US—VCDB
2017-10-01ShopRiteError / misconfigurationRetailNY, US7,000 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 2026-10-17 06:40 UTC.