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. Technology4
  9. Transportation4
  10. Administrative3
  11. Accommodation & Food3
  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
Healthcare68060241
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 (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

438 incidents match, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2014-02-01Advanced Care HospitalistsError / misconfigurationProfessional ServicesFL, US400 recordsVCDB
2014-02-01ComixologyHacking / intrusionProfessional ServicesNY, US—VCDB
2014-02-01Goodsons Law Firm Charlotte NCRansomwareProfessional ServicesNC, US—VCDB
2014-01-30ClinkleHacking / intrusionProfessional ServicesCA, US33 recordsVCDB
2014-01-28RovioUnknownProfessional ServicesFI—VCDB
2014-01-01Betfair Group PLCHacking / intrusionProfessional ServicesGB1.0M recordsVCDB
2014-01-01Boxee.tvHacking / intrusionProfessional ServicesIL—VCDB
2014-01-01Computerworld PhilippinesHacking / intrusionProfessional ServicesPH—VCDB
2014-01-01CrytekHacking / intrusionProfessional ServicesDE—VCDB
2014-01-01Koch BrothersError / misconfigurationProfessional ServicesUS—VCDB
2014-01-01LeapLabError / misconfigurationProfessional ServicesMN, US—VCDB
2014-01-01Liberty Tax ServiceTheft or lossProfessional ServicesCA, US—VCDB
2014-01-01M.D. ManageError / misconfigurationProfessional ServicesNJ, US—VCDB
2014-01-01Microsoft CorpUnknownProfessional ServicesWA, US1 recordsVCDB
2014-01-01National Research CouncilHacking / intrusionProfessional ServicesCA—VCDB
2014-01-01Pride Medical ServicesInsider misuseProfessional ServicesGA, US379 recordsVCDB
2014-01-01WazeHacking / intrusionProfessional ServicesCA, US—VCDB
2014-01-01Webdeveloper EcommerceInsider misuseProfessional ServicesDK20k recordsVCDB
2014-01-01WooThemesUnknownProfessional ServicesNO—VCDB
2013-12-29OpenSSLHacking / intrusionProfessional ServicesDE, US—VCDB
2013-12-29openssl.orgHacking / intrusionProfessional ServicesUnknown—VCDB
2013-12-20Stakerlaw Tax and Estate Planning LawTheft or lossProfessional ServicesCA, US—VCDB
2013-12-01Nielsen AudioError / misconfigurationProfessional ServicesMD, US—VCDB
2013-10-14Github.comHacking / intrusionProfessional ServicesCA, US—VCDB
2013-09-23translate.comHacking / intrusionProfessional ServicesUnknown—VCDB
2013-09-14Unnamed organisationHacking / intrusionProfessional ServicesUnknown—VCDB
2013-09-13Executive Accounting Services, Inc.Hacking / intrusionProfessional ServicesNC, US—VCDB
2013-09-01Washington Network GroupHacking / intrusionProfessional ServicesUS2,000 recordsVCDB
2013-09-01zimbra.comHacking / intrusionProfessional ServicesCA, US—VCDB
2013-08-28DigitalOceanHacking / intrusionProfessional ServicesUS—VCDB
2013-08-12Legal Aid Society of San Mateo CountyTheft or lossProfessional ServicesCA, US—VCDB
2013-07-26Paymast'r ServicesHacking / intrusionProfessional ServicesFL, US—VCDB
2013-07-21NASDAQ.comHacking / intrusionProfessional ServicesNY, US—VCDB
2013-07-14CANONICAL GROUP LTDMalwareProfessional ServicesGB1.8M recordsVCDB
2013-07-12Income and Capital Growth Strategies, IncUnknownProfessional ServicesCA, US—VCDB
2013-07-01US Missile Defense AgencyHacking / intrusionProfessional ServicesDC, US—VCDB
2013-07-01US Missile Defense AgencyHacking / intrusionProfessional ServicesGB400k recordsVCDB
2013-06-28ApteanHacking / intrusionProfessional ServicesGA, US—VCDB
2013-06-22Vishal Kaushal & CompanyHacking / intrusionProfessional ServicesIN5 recordsVCDB
2013-05-19Groupon TaiwanHacking / intrusionProfessional ServicesTW400k recordsVCDB
2013-05-16Goldner AssociatesHacking / intrusionProfessional ServicesOH, US—VCDB
2013-05-14Shumsky Promotional AgencyHacking / intrusionProfessional ServicesOH, US1,400 recordsVCDB
2013-05-14Target MarketingHacking / intrusionProfessional ServicesVA, US—VCDB
2013-05-08Name.comHacking / intrusionProfessional ServicesCO, US—VCDB
2013-05-07Independence Care SystemTheft or lossProfessional ServicesNY, US2,435 recordsVCDB
2013-05-03Huntington's Disease Society of AmericaHacking / intrusionProfessional ServicesNH, US—VCDB
2013-05-03Radiant SystemsError / misconfigurationProfessional ServicesUS—VCDB
2013-04-27Millimaki Eggert, LLPTheft or lossProfessional ServicesCA, US—VCDB
2013-04-26Sutter Physician ServicesInsider misuseProfessional ServicesCA, US2,582 recordsVCDB
2013-04-26docomoHacking / intrusionProfessional ServicesJP2,208 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 2026-10-13 19:43 UTC.