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
614
last 12 months, every source
People in US health breaches
70.5M
478 breaches reported to HHS
Material incidents, US listed firms
21
SEC 8-K Item 1.05, 12 months
Accounts in new breach records
522.5M
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 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. 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
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
2019-09-05Verlo Mattress FactoryError / misconfigurationManufacturingUS-WI, US388k recordsVCDB
2019-09-04InterMedHacking / intrusionHealthcareME, US30k recordsVCDB
2019-09-04SberbankInsider misuseFinance & InsuranceUS-77, RU60.0M recordsVCDB
2019-09-04UnknownError / misconfiguration—Unknown419.0M recordsVCDB
2019-09-04Wolcott school districtRansomwareEducationUS-CT, US—VCDB
2019-09-03Paderborn GovernmentError / misconfigurationPublic AdministrationDE-NW, DE—VCDB
2019-09-02People’s Health CentersRansomwareHealthcareUS152k recordsVCDB
2019-09-01 City of OcalaPhishing / social engineeringPublic AdministrationFL, US—VCDB
2019-09-01Buddy Dyer CampaignError / misconfigurationPublic AdministrationFL, US—VCDB
2019-09-01Charing Cross Gender Identity ClinicError / misconfigurationHealthcareGB1,800 recordsVCDB
2019-09-01DataBookError / misconfigurationInformationEC-P, EC20.0M recordsVCDB
2019-09-01Elizabeth Family Health Theft or lossHealthcareCO, US28k recordsVCDB
2019-09-01EpicBot epicbot.comData breach (cause not stated)——817k accountsHIBP
2019-09-01Henderson County Department of Social ServicesInsider misusePublic AdministrationNC, US—VCDB
2019-09-01Klamath CountyHacking / intrusionPublic AdministrationOR, US—VCDB
2019-09-01Las Cruces Public SchoolsError / misconfigurationEducationNM, US—VCDB
2019-09-01Manor Care EastInsider misuseHealthcareIL, US—VCDB
2019-09-01NovaestratError / misconfigurationInformationEC20.8M recordsVCDB
2019-09-01Plaza at Clover Lake Nursing Home Facility Theft or lossHealthcareUS—VCDB
2019-09-01TAROMInsider misuseTransportationRO22 recordsVCDB
2019-09-01Unnamed organisationTheft or loss—Unknown—VCDB
2019-09-01Yves RocherError / misconfigurationProfessional ServicesFR2.5M recordsVCDB
2019-09-01Zynga zynga.comData breach (cause not stated)——172.9M accountsHIBP
2019-08-29Taipei HosptialRansomwareHealthcareTW—VCDB
2019-08-28Temple University HospitalRansomwareHealthcarePA, US—VCDB
2019-08-27AlpineReplay traceup.comData breach (cause not stated)——899k accountsHIBP
2019-08-26Mille Lacs Health System Hacking / intrusionHealthcareMN, US—VCDB
2019-08-26PerCSoftRansomwareInformationUS-WI, US—VCDB
2019-08-26UNICEFError / misconfigurationOther ServicesBE8,253 recordsVCDB
2019-08-24Tots and Teens Pediatric MedicineHacking / intrusionHealthcareTX, US—VCDB
2019-08-21ToonDoo toondoo.comData breach (cause not stated)——6.0M accountsHIBP
2019-08-20Mastercard Priceless Specials specials.mastercard.deData breach (cause not stated)——89k accountsHIBP
2019-08-19Dealer Leads, LLCError / misconfigurationInformationUS-CA, US198.0M recordsVCDB
2019-08-14Audi audiusa.comData breach (cause not stated)——2.7M accountsHIBP
2019-08-14Credit KarmaError / misconfigurationFinance & InsuranceUS—VCDB
2019-08-11europa.jobs europa.jobsData breach (cause not stated)——226k accountsHIBP
2019-08-05Mazankowski Alberta Heart InstituteTheft or lossHealthcareCA650 recordsVCDB
2019-08-03MicrosoftError / misconfigurationAdministrativeCA, US—VCDB
2019-08-03Promofarma promofarma.comData breach (cause not stated)——1.3M accountsHIBP
2019-08-013FunError / misconfigurationInformationUnknown1.5M recordsVCDB
2019-08-01Bavarian Red CrossError / misconfigurationHealthcareDE—VCDB
2019-08-01Bowlin’s, Inc.Theft or lossRetailAZ, US—VCDB
2019-08-01ChevronTheft or lossRetailCA, US—VCDB
2019-08-01City of KaufmanRansomwarePublic AdministrationTX, US—VCDB
2019-08-01Entercom Hacking / intrusionManufacturingUS—VCDB
2019-08-01EquinitiError / misconfigurationFinance & InsuranceGB740 recordsVCDB
2019-08-01Facebook facebook.comData breach (cause not stated)——509.5M accountsHIBP
2019-08-01Hostinger Hacking / intrusionInformationLT14.0M recordsVCDB
2019-08-01LimeLeads limeleads.comData breach (cause not stated)——17.8M accountsHIBP
2019-08-01MGMHacking / intrusionAccommodation & FoodNV, US10.7M 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 2026-10-16 17:03 UTC.