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
474 breaches reported to HHS
Material incidents, US listed firms
22
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 sectorHealthcare747 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 disclosureDouble CounterData breach (cause not stated) · 4 Oct 2026 · HIBP

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. Healthcare747
  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
Healthcare68060241
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 (29 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
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
Radiology Associates of Richmond · Healthcare21 Jul 2025 – 21 May 2026Hacking / intrusionHHS

6All incidents

Clear

112 incidents match, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2015-06-01XPO Logistics IncInsider misuseTransportationDE, US—VCDB
2015-02-01RTA ParatransitInsider misuseTransportationOH, US—VCDB
2015-01-01Tampa International AirportInsider misuseTransportationFL, US—VCDB
2015-01-01Uber TechnologiesHacking / intrusionTransportationCA, US—VCDB
2015-01-01United Postal ServiceTheft or lossTransportationCA, US6,240 recordsVCDB
2014-09-17UberError / misconfigurationTransportationCA, US50k recordsVCDB
2014-09-01U.S. Postal ServiceInsider misuseTransportationCA, US6,200 recordsVCDB
2014-07-01Korean AirMalwareTransportationKR—VCDB
2014-04-20Haneda AirportError / misconfigurationTransportationJP—VCDB
2014-03-25WAZEHacking / intrusionTransportationUS—VCDB
2014-01-01China Railway CorporationHacking / intrusionTransportationCN130k recordsVCDB
2014-01-01Delhi Metro Rail CorporationUnknownTransportationIN—VCDB
2014-01-01Fort Lauderdale-Hollywood International AirportError / misconfigurationTransportationFL, US—VCDB
2014-01-01Iron Mountain IncTheft or lossTransportationMA, US13k recordsVCDB
2014-01-01New York City Metropolitan Transportation AuthorityError / misconfigurationTransportationNY, US15k recordsVCDB
2014-01-01New York City Taxi and Limousine CommissionInsider misuseTransportationNY, US—VCDB
2014-01-01Regional Transportation DistrictTheft or lossTransportationCO, US—VCDB
2014-01-01United States Postal ServiceMalwareTransportationDC, US800k recordsVCDB
2013-11-07New Zealand Courier'sHacking / intrusionTransportationNZ—VCDB
2013-10-01Long Island RailroadTheft or lossTransportationNJ, US—VCDB
2013-10-01Massachusetts Bay Transportation AuthorityInsider misuseTransportationMA, US—VCDB
2013-09-16Pakistan International AirlinesHacking / intrusionTransportationPK—VCDB
2013-09-06CSX CorpInsider misuseTransportationFL, US—VCDB
2013-07-19Sacramento Regional TransitInsider misuseTransportationUS30 recordsVCDB
2013-07-01Sacremento Regional TransitInsider misuseTransportationCA, US23 recordsVCDB
2013-06-21Southwest AirlinesError / misconfigurationTransportationTX, US—VCDB
2013-06-01US Postal ServiceTheft or lossTransportationPA, US21 recordsVCDB
2013-05-30Albany International AirportHacking / intrusionTransportationNY, US7 recordsVCDB
2013-04-01Dubai International AirportHacking / intrusionTransportationAE53 recordsVCDB
2013-01-27Navarro Security GroupMalwareTransportationFL, US—VCDB
2013-01-01CorporateCarOnline.comUnknownTransportationMO, US850k recordsVCDB
2013-01-01Etihad AirwaysUnknownTransportationAE7,000 recordsVCDB
2013-01-01Graphic DataError / misconfigurationTransportationGB1.0M recordsVCDB
2013-01-01Kochi Metro Rail CorporationHacking / intrusionTransportationIN—VCDB
2013-01-01Life FlightError / misconfigurationTransportationUT, US842 recordsVCDB
2013-01-01London UndergroundTheft or lossTransportationLONDON, GB—VCDB
2013-01-01New York Metropolitan Transportation AuthorityTheft or lossTransportationNY, US—VCDB
2013-01-01Publishers Circulation FulfillmentHacking / intrusionTransportationNJ, US—VCDB
2013-01-01The Long Island Rail Road CompanyTheft or lossTransportationNY, US—VCDB
2013-01-01US Postal ServiceInsider misuseTransportationPA, US—VCDB
2013-01-01United States Post OfficeTheft or lossTransportationCA, US—VCDB
2013-01-01UnknownError / misconfigurationTransportationUS8,000 recordsVCDB
2013-01-01Unnamed organisationMalwareTransportationKR—VCDB
2013-01-01YTO ExpressInsider misuseTransportationCN—VCDB
2012-12-01National Belgian Railway CompanyError / misconfigurationTransportationBE1.4M recordsVCDB
2012-11-15United AirlinesError / misconfigurationTransportationIL, US—VCDB
2012-06-23Cunard LineError / misconfigurationTransportationCA, US1,225 recordsVCDB
2012-06-08Safe Ride Services, IncUnknownTransportationAZ, US42k recordsVCDB
2012-03-08JalaTheft or lossTransportationGB250 recordsVCDB
2012-02-28Kalmar AirportHacking / intrusionTransportationSE—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 2026-10-13 16:14 UTC.