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
473 breaches reported to HHS
Material incidents, US listed firms
23
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 sectorHealthcare748 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. Healthcare748
  2. Information28
  3. Manufacturing21
  4. Professional Services19
  5. Retail18
  6. Finance, Insurance & Real Estate6
  7. Services5
  8. Technology4
  9. Transportation4
  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
Healthcare68160241
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 (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

Clear

890 incidents match, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2012-03-01Defense Finance and Accounting ServiceHacking / intrusionFinance & InsuranceDC, US—VCDB
2012-03-01E-TradeHacking / intrusionFinance & InsuranceNY, US—VCDB
2012-03-01Electronic Payments Inc.Hacking / intrusionFinance & InsuranceNY, US—VCDB
2012-03-01Nordstrom Federal Savings BanksHacking / intrusionFinance & InsuranceCA, US—VCDB
2012-03-01PayPal, Inc.Hacking / intrusionFinance & InsuranceCA, US—VCDB
2012-03-01Teachers Insurance and Annuity Association - College Retirement Equities FundHacking / intrusionFinance & InsuranceNY, US—VCDB
2012-03-01USAAHacking / intrusionFinance & InsuranceTX, US—VCDB
2012-03-01Veracity Payment Solutions, Inc.Hacking / intrusionFinance & InsuranceGA, US—VCDB
2012-03-01iPayment, Inc.Hacking / intrusionFinance & InsuranceNY, US—VCDB
2012-02-28Fidelity InvestmentsError / misconfigurationFinance & InsuranceMA, US1 recordsVCDB
2012-02-15TransUnionHacking / intrusionFinance & InsuranceCA—VCDB
2012-02-14Hagerty InsuranceError / misconfigurationFinance & InsuranceMI, US—VCDB
2012-02-06LPL FinancialTheft or lossFinance & InsuranceMA, US—VCDB
2012-02-03Delta DentalUnknownFinance & InsuranceCA, US12k recordsVCDB
2012-01-31Lincoln Financial Securities CorporationHacking / intrusionFinance & InsurancePA, US4,657 recordsVCDB
2012-01-31Molina Healthcare of CaliforniaUnknownFinance & InsuranceCA, US11k recordsVCDB
2012-01-31Union BankInsider misuseFinance & InsuranceLA, US—VCDB
2012-01-28Back of American and ChaseHacking / intrusionFinance & InsuranceUS—VCDB
2012-01-25Eaton VanceError / misconfigurationFinance & InsuranceMA, US5 recordsVCDB
2012-01-23Euronet Worldwide IncHacking / intrusionFinance & InsuranceKS, US—VCDB
2012-01-17American Stock Transfer & Trust Company, LLcError / misconfigurationFinance & InsuranceNY, US6 recordsVCDB
2012-01-10Alicare, Inc.Error / misconfigurationFinance & InsuranceNY, US—VCDB
2012-01-10State of Tennessee Sponsored Group Health PlanError / misconfigurationFinance & InsuranceTN, US1,770 recordsVCDB
2012-01-02Bank of America Merchant Services, LLCInsider misuseFinance & InsuranceKY, US—VCDB
2012-01-01ANZ BankError / misconfigurationFinance & InsuranceAU60 recordsVCDB
2012-01-01Ameritas Life Insurance Corp.Theft or lossFinance & InsuranceNE, US3,000 recordsVCDB
2012-01-01Australian Reserve BankError / misconfigurationFinance & InsuranceAU160 recordsVCDB
2012-01-01Australian Securities and Investments CommissionHacking / intrusionFinance & InsuranceAU—VCDB
2012-01-01Blue Cross & Blue Shield of MinnesotaInsider misuseFinance & InsuranceMN, US56 recordsVCDB
2012-01-01CareFirstError / misconfigurationFinance & InsuranceMD, US2 recordsVCDB
2012-01-01Citibank, N.A.Theft or lossFinance & InsuranceNY, US—VCDB
2012-01-01Citigroup Inc.Hacking / intrusionFinance & InsuranceNY, US—VCDB
2012-01-01Commercial Bank of EthiopiaHacking / intrusionFinance & InsuranceET18 recordsVCDB
2012-01-01DHI MortgageHacking / intrusionFinance & InsuranceTX, US—VCDB
2012-01-01Delta Dental of IllinoisError / misconfigurationFinance & InsuranceIL, US650 recordsVCDB
2012-01-01ElantisHacking / intrusionFinance & InsuranceBE3,700 recordsVCDB
2012-01-01EmblemHealthError / misconfigurationFinance & InsuranceNY, US1,800 recordsVCDB
2012-01-01Equity Trust CompanyHacking / intrusionFinance & InsuranceOH, US—VCDB
2012-01-01First MarblheadInsider misuseFinance & InsuranceMA, US—VCDB
2012-01-01Halifax BankMalwareFinance & InsuranceGB—VCDB
2012-01-01Hanover Insurance Group, Inc.Theft or lossFinance & InsuranceMA, US—VCDB
2012-01-01JPMorgan Chase & Co.Theft or lossFinance & InsuranceNY, US6,000 recordsVCDB
2012-01-01Korea Investors ServiceHacking / intrusionFinance & InsuranceKP315 recordsVCDB
2012-01-01Lloyds Banking Group plcHacking / intrusionFinance & InsuranceGB—VCDB
2012-01-01Local 2-Hospitality Industry Child & Elder Care PlanError / misconfigurationFinance & InsuranceCA, US—VCDB
2012-01-01Massachusetts Mutual Life InsuranceError / misconfigurationFinance & InsuranceMA, US—VCDB
2012-01-01Moodie ReportHacking / intrusionFinance & InsuranceGB12 recordsVCDB
2012-01-01Nationwide Insurance CompanyHacking / intrusionFinance & InsuranceGA, US1.1M recordsVCDB
2012-01-01State Farm InsuranceInsider misuseFinance & InsuranceIL, US—VCDB
2012-01-01TD BankError / misconfigurationFinance & InsuranceNJ, US—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 2026-10-14 05:42 UTC.