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
616
last 12 months, every source
People in US health breaches
70.4M
475 breaches reported to HHS
Material incidents, US listed firms
23
SEC 8-K Item 1.05, 12 months
Accounts in new breach records
522.5M
126 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 sectorHealthcare752 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. Healthcare752
  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
Healthcare68461241
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

11,845 incidents, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2025-04-04Friendship House, Inc.Hacking / intrusionHealthcareNE, US501 peopleHHS
2025-04-04Loretto HospitalHacking / intrusionHealthcareIL, US501 peopleHHS
2025-04-04Newburgh Healthcare Residential Center, Inc.Hacking / intrusionHealthcareIN, US700 peopleHHS
2025-04-02Allegany Council on Alcoholism & Substance Abuse, Inc.Hacking / intrusionHealthcareNY, US696 peopleHHS
2025-04-02Dameron HospitalHacking / intrusionHealthcareCA, US211k peopleHHS
2025-04-01Central District Health Department of NebraskaHacking / intrusionHealthcareNE, US59k peopleHHS
2025-04-01Health Services LLCHacking / intrusionHealthcareOH, US76k peopleHHS
2025-04-01Toppan Next TechRansomwareProfessional ServicesSG—VCDB
2025-03-31Willamette Family, Inc.Hacking / intrusionHealthcareOR, US3,899 peopleHHS
2025-03-30Samsung Germany Customer Tickets samsung.deData breach (cause not stated)——216k accountsHIBP
2025-03-28Baptist Hospitals of Southeast TexasHacking / intrusionHealthcareTX, US501 peopleHHS
2025-03-28Community Dental Care, Inc.Hacking / intrusionHealthcareMN, US135k peopleHHS
2025-03-28Ocuco Ltd.Hacking / intrusionHealthcareIE241k recordsVCDB
2025-03-28Unnamed organisationRansomwareHealthcareAE—VCDB
2025-03-27German Doner Kebab germandonerkebab.comData breach (cause not stated)——162k accountsHIBP
2025-03-26TehetségKapu tehetsegkapu.huData breach (cause not stated)——54k accountsHIBP
2025-03-25Bigfork Valley HospitalHacking / intrusionHealthcareMN, US8,496 peopleHHS
2025-03-25James J. Lynch, MD Ltd. dba Swift InstituteHacking / intrusionHealthcareNV, US13k peopleHHS
2025-03-25Troy Hunt's Mailchimp List troyhunt.comData breach (cause not stated)——17k accountsHIBP
2025-03-24ADDA adda.ioData breach (cause not stated)——1.8M accountsHIBP
2025-03-21AmeriHealth Caritas LouisianaUnauthorised access or disclosureHealthcareLA, US1,552 peopleHHS
2025-03-21Cuties AI cuties.aiData breach (cause not stated)——144k accountsHIBP
2025-03-21Fyzical Acquisition Holdings, LLCHacking / intrusionHealthcareFL, US43k peopleHHS
2025-03-21MedRevenu, LLCHacking / intrusionHealthcareCA, US18k peopleHHS
2025-03-21MedicareCompareUSAHacking / intrusionHealthcareWA, US5,782 peopleHHS
2025-03-21Mid Florida Primary Care, PAHacking / intrusionHealthcareFL, US16k peopleHHS
2025-03-19Millennium Home Health CareHacking / intrusionHealthcareOK, US4,743 peopleHHS
2025-03-18Presbyterian Health PlanHacking / intrusionHealthcareNM, US7,100 peopleHHS
2025-03-17Lena Pope Home Inc.Hacking / intrusionHealthcareTX, US3,523 peopleHHS
2025-03-16AUTOSUR autosur.frData breach (cause not stated)——487k accountsHIBP
2025-03-14Baylor Scott & White Texas Spine & Joint HospitalHacking / intrusionHealthcareTX, US1,640 peopleHHS
2025-03-14CDHA Management, LLC and Spark DSO, LLC dba Chord Specialty Dental PartnersHacking / intrusionHealthcareTN, US173k peopleHHS
2025-03-14Columbia Eye ClinicHacking / intrusionHealthcareSC, US500 peopleHHS
2025-03-10Nice Healthcare Management Company, IncHacking / intrusionHealthcareMN, US10k peopleHHS
2025-03-09UPSHacking / intrusionTransportationGA, US—VCDB
2025-03-06Fort Wayne Medical Education ProgramHacking / intrusionHealthcareIN, US29k peopleHHS
2025-03-06SCLARCTheft or lossHealthcareCA, US722 peopleHHS
2025-03-05Madison County, MSHacking / intrusionHealthcareMS, US6,082 peopleHHS
2025-03-03Manchester Rehabilitation and Healthcare CenterHacking / intrusionHealthcareCT, US5,415 peopleHHS
2025-03-01NATIONAL PRESTO INDUSTRIES INCHacking / intrusionManufacturingWI, US—SEC 8-K
2025-02-28CEI Vision Partners, LLCHacking / intrusionHealthcareMO, US11k peopleHHS
2025-02-28East Hawaii Rehab, Inc. DBA Lehua Physical Therapy and RehabTheft or lossHealthcareHI, US8,472 peopleHHS
2025-02-28Kronick Moskovitz Tiedemann & GirardHacking / intrusionHealthcareCA, US2,511 peopleHHS
2025-02-28Southeast Series of Lockton Companies, LLC (Lockton)Hacking / intrusionHealthcareGA, US1.1M peopleHHS
2025-02-28Total Medical ImagingUnauthorised access or disclosureHealthcareFL, US27k peopleHHS
2025-02-26DermCare ManagementHacking / intrusionProfessional ServicesFL, US—VCDB
2025-02-25Lake Washington VascularHacking / intrusionHealthcareWA, US22k peopleHHS
2025-02-24Orange Romania orange.roData breach (cause not stated)——557k accountsHIBP
2025-02-16Consultants in Pain MedicineHacking / intrusionHealthcareTX, US1,124 peopleHHS
2025-02-15ALIEN TXTBASE Stealer LogsInfostealer logs——284.1M 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 2026-10-15 08:02 UTC.