Data Breach Index (A–Z) – A

Explore 171 data breaches in the A group. Open a record for exposed data classes, affected account counts and recommended security steps.

A

A Volga Girl-Associated Dataset A-1 Rent-Alls Alleged Data Exposure A&D Technology Data Breach AarinFantasy-Associated Dataset Abandonia (2015) Data Breach Abandonia (2022) Data Breach ABC.net.au-Associated Dataset Abrigo Business Contact Data Incident (2026)Absolute Dental 2025 Security Incident AbuseWith.Us Data Breach Academic Urology & Urogynecology of Arizona Security Incident Acadia Healthcare 2026 Security Incident Acadian Ambulance Data Breach (2024)Accenture 2026 Data Breach AccountGear-Associated Dataset ACCRETECH America Data Breach ACLA 2025 Data Breach ACME Truck Line Data Breach Acne.org Data Breach Action Network December 2019 Alleged Data Exposure Activision Employee Data Incident (2022)ActMobile-Associated Exposed Database Finding Acuity Spam Data List Adams Health Network Data Breach Adapt B2B Profile Data Incident (2018)AdaptHealth 2026 Data Breach AdboardZ-Associated Dataset ADDA Data Breach Addi 2026 Data Breach Adecco 2021 Candidate Data Incident ADERE Peneda-Gerês-Associated Dataset Aditya Birla Fashion and Retail Data Breach Admin Discussion Forum-Associated Dataset Admission Ads-Associated Dataset Adobe Data Breach Adopt Me Trading Values Data Breach Adpost Data Breach ADT Data Breach Adult FriendFinder (2015) Data Breach Adult FriendFinder (2016) Data Breach Adult-FanFiction.Org Data Breach Advance Auto Parts Data Incident (2024)Advantive Data Breach Aerials & Cable Equipment-Associated Dataset AerServ Data Breach Aesto Health 2025 Data Breach Aflac Incorporated 2025 Data Breach Aflac Japan 2026 Security Incident AG Energy-Associated Dataset Age of Wushu-Associated Dataset AgelessRx Data Breach AgoraVale-Associated Dataset AgusiQ-Torrents.pl Data Breach AhaShare.com Data Breach AhoyGame 2017 Alleged Data Exposure ai.type Data Breach AimJunkies-Associated Dataset Aimware Data Breach Aipai.com-Associated Dataset Aitkin County Health and Human Services Data Breach (2026)Ajarn Data Breach Ajax Taraftar Sistemleri Data Incident (2026)AKP Email Archive (2016) Data Breach Alabama Ophthalmology Associates 2025 Data Breach Alabama Symphony Orchestra Data Breach Alamo Heights ISD Data Breach Albertsons-Associated Dataset Albion Online Forum Data Breach (2020)Alcott HR 2025 Data Breach Aldrich Pediatric Dentistry 2026 Data Breach ALIEN TXTBASE Infostealer Log Derlemesi Malware Exposure Aligned Orthopedic Partners 2025 Data Breach Alkegen Data Breach All About Women’s Care Data Breach (2026)Allegheny Health Network Data Breach AllerVie Health 2025 Data Breach Allianz Life Data Incident (2025)AllMyFavorites.net-Associated Dataset AllWomensTalk January 2016 Alleged Data Exposure AloeVeraIndia-Associated Dataset Alpine Agency Data Breach AlpineReplay Data Breach Alta Orthopaedics Data Breach (Scope Not Disclosed)Altenen Data Breach AMA Auctions-Associated Dataset Aman 2026 Data Breach Amarider Online-Associated Dataset Amart Furniture Data Breach American Addiction Centers Data Breach American First Finance Data Breach American Lending Center Data Breach American Tower Business Contact Data Incident (2026)Ameriprise Data Incident (2026)Amgen 2026 Data Breach Amicus Solutions / Fedora Solutions Data Breach (2026)Amkette-Associated Dataset Amlaan-Associated Dataset Amtrak Customer Support Data Incident (2026)Anabel Lee-Associated Dataset Analog Devices 2026 Data Breach Anchorage Neighborhood Health Center 2025 Data Breach Andover Eye Associates 2025 Data Breach Android Forums 2011 Data Breach AndroidLista 2021 Data Breach Anesthesia Associates of Morristown Data Breach Animal Jam 2020 Data Breach Anime-Planet 2016 Data Breach AnimeGame 2020 Data Breach Animeify 2021 Data Breach AnimeLeague 2024 Data Breach Animoto 2018 Data Breach Animu Tank-Associated Dataset AnitaRoddick-Associated Dataset ANKA April 2025 Data Breach Anne Arundel Dermatology Data Breach (2025)Annunci69.it-Associated Dataset Anon Hackers-Associated Dataset Anti Public Multi-Source Credential List Any-Time Home Care Data Breach Apex Spine & Neurosurgery 2025 Data Breach ApexSMS Spam/Lead Data Exposure APK.TW 2022 Data Breach APOIA.se Data Breach Apollo B2B Profile Data Incident (2018)Apolyton Civilization Site-Associated Dataset Appartoo 2017 Data Breach Appen 2020 Data Breach Aptoide 2020 Data Breach Archer Health 2025 Data Breach ArmA3-Life-Associated Dataset Armor Games 2019 Data Breach Army Force Online 2016 Data Breach Aroostook Mental Health Center 2026 Data Breach ArtificialAiming.net-Associated Dataset Artists&Clients 2025 Data Breach ArtNow-Associated Dataset Artsy 2018 Data Breach Artvalue 2019 Data Breach Ascension 2024 Partner Data Breach Ashley Madison 2015 Data Breach Aspen Title & Escrow Data Breach Aspkin’s World-Associated Dataset AssetMark Data Breach Association Nationale des Premiers Secours Data Incident (2026)AssuranceAmerica 2026 Data Breach Astropid 2013 Data Breach asuslaptop.co.uk-Associated Dataset AT&T Attributed Identity Dataset (2021)Aternos 2015 Data Breach Atlantic Brain and Spine 2026 Data Breach Atlas Menu 2026 Data Breach Atlas Quantum 2018 Data Breach Atlas RSPS January 2020 Alleged Data Exposure AtletasNow-Associated Dataset Atmeltomo 2021 Data Breach Auction-Warehouse-Associated Dataset Audi Data Breach Aura Customer Service and Marketing Data Incident AusCraft-Associated Dataset Austin Plastic & Reconstructive Data Breach Autocentrum.pl 2018 Data Breach AUTOSUR 2025 Data Incident Autotrader Public Listing Data Corpus Avast Forum 2014 Data Breach Averhealth/Avertest Email Data Incident (2025-2026)Avito.ma-Associated Dataset Avosina Healthcare Solutions 2025 Data Breach Avvo December 2019 Credential Corpus Awakenings Center 2025 Data Breach AzadiJobs-Associated Dataset Azle Smiles 2026 Data Breach