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. Administrative3
  11. Accommodation & Food3
  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
2018-06-01FlipboardHacking / intrusionInformationCA, US150.0M recordsVCDB
2018-06-01GoDaddyError / misconfigurationInformationUS—VCDB
2018-06-01Grant Medical CenterError / misconfigurationHealthcareOH, US3 recordsVCDB
2018-06-01Hastings Borough CouncilError / misconfigurationPublic AdministrationGB—VCDB
2018-06-01Israeli Defense ForceTheft or lossPublic AdministrationIL—VCDB
2018-06-01Marine Credit UnionTheft or lossFinance & InsuranceCA, US137 recordsVCDB
2018-06-01PaniniError / misconfigurationInformationDE—VCDB
2018-06-01Romwe romwe.comData breach (cause not stated)——19.5M accountsHIBP
2018-06-01SHEIN shein.comData breach (cause not stated)——39.1M accountsHIBP
2018-06-01TCF BankTheft or lossFinance & InsuranceMN, US—VCDB
2018-06-01TDECUTheft or lossFinance & InsuranceTX, US—VCDB
2018-06-01Washington Health SystemInsider misuseHealthcarePA, US1 recordsVCDB
2018-06-01ZhaopingInsider misuseInformationCN160k recordsVCDB
2018-05-31Ticketfly ticketfly.comData breach (cause not stated)——26.2M accountsHIBP
2018-05-30Adult-FanFiction.Org adult-fanfiction.orgData breach (cause not stated)——186k accountsHIBP
2018-05-30CNO Financial GroupHacking / intrusionFinance & InsuranceIN, US566k recordsVCDB
2018-05-29FacebookError / misconfigurationInformationUS—VCDB
2018-05-29FacebookError / misconfigurationInformationCA, US800k recordsVCDB
2018-05-28San Francisco's Institute on AgingHacking / intrusionProfessional ServicesCA, US3,908 recordsVCDB
2018-05-26Associated Dermatology and Skin Cancer ClinicTheft or lossHealthcareMT, US1,254 recordsVCDB
2018-05-25QuikTripTheft or lossRetailUS-IA, US30 recordsVCDB
2018-05-25University of Texas, Permian BasinUnknownEducationTX, US—VCDB
2018-05-23Earl EnterprisesMalwareAccommodation & FoodFL, US2.0M recordsVCDB
2018-05-23Houzz houzz.comData breach (cause not stated)——48.9M accountsHIBP
2018-05-22Virginia Department of Environmental QualityHacking / intrusionPublic AdministrationVA, US—VCDB
2018-05-19PDQMalwareAccommodation & FoodFL, US—VCDB
2018-05-18FacebookError / misconfigurationInformationCA, US—VCDB
2018-05-17The University of North Carolina at Chapel Hill School of MedicinePhishing / social engineeringEducationNC, US3,716 recordsVCDB
2018-05-16Poshmark poshmark.comData breach (cause not stated)——36.4M accountsHIBP
2018-05-14Billings ClinicHacking / intrusionHealthcareMT, US8,400 recordsVCDB
2018-05-13Lolzteam lolzteam.netData breach (cause not stated)——398k accountsHIBP
2018-05-12Blue Spring's Family CareRansomwareHealthcareMO, US45k recordsVCDB
2018-05-10Elmcroft Senior LivingHacking / intrusionHealthcareUS-KY, US—VCDB
2018-05-10Grimes County Sheriff's OfficeInsider misusePublic AdministrationTX, US—VCDB
2018-05-10Registered Organisations CommissionError / misconfigurationPublic AdministrationAU1 recordsVCDB
2018-05-09North West Territories Department of Health and Social ServicesTheft or lossPublic AdministrationCA34k recordsVCDB
2018-05-07Roseburg Public SchoolsRansomwareEducationOR, US—VCDB
2018-05-07ViewFines viewfines.co.zaData breach (cause not stated)——778k accountsHIBP
2018-05-03Matanuska-Susitna (Mat-Su) Borough, AlaskaRansomwarePublic AdministrationAK, US—VCDB
2018-05-03Monroe County DMVTheft or lossPublic AdministrationUS-NY, US—VCDB
2018-05-01Creative creative.comData breach (cause not stated)——483k accountsHIBP
2018-05-01Human Longevity, IncInsider misuseProfessional ServicesCA, US—VCDB
2018-05-01Idaho State Tax CommissionMalwarePublic AdministrationUS-ID, US36 recordsVCDB
2018-05-01Light's HopeHacking / intrusionInformationUnknown—VCDB
2018-05-01Linux Forums linuxforums.orgData breach (cause not stated)——276k accountsHIBP
2018-05-01Southwest Vermont Supervisory UnionMalwareOther ServicesVT, US1 recordsVCDB
2018-05-01idaho legislative services officeUnknownPublic AdministrationUS-ID, US—VCDB
2018-04-28AppleInsider misuseManufacturingCA, US—VCDB
2018-04-28Chegg chegg.comData breach (cause not stated)——39.7M accountsHIBP
2018-04-28Funny Games funny-games.bizData breach (cause not stated)——764k accountsHIBP

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 01:13 UTC.