Data Breach Index (A–Z) – M
Explore 184 data breaches in the M group. Open a record for exposed data classes, affected account counts and recommended security steps.
M
iuTruyenTranh (MangaXY) Alleged Data ExposureMac Forums Data BreachMac-Torrents Data BreachMacGeneration Data BreachMadera Community Hospital 2025 Data BreachMadison Square Garden Sports 2026 Data BreachMagicDuel Data BreachMagMutual 2026 Data BreachMaiestas 2017 Data Breachmail.ru Dump Alleged Data ExposureMainline Health Systems 2024 Data BreachMais Amigas Data BreachMajorGeeks Data BreachMakipos Alleged Data ExposureMalakye Alleged Data ExposureMalaysia Telecom & Citizen Data Breach (2017-2018)MalindoAir Data BreachMALL.cz Data BreachMalwarebytes Data BreachManchester Airports Group 2026 Data BreachManga Traders Data BreachMangaDex Data BreachMangaFox.me Data BreachMangaToon Data BreachManipulated Caiman Spam Data ListMapExpert Alleged Data ExposureMappery Data BreachMarchi Technologies Data BreachMarcus & Millichap 2026 Data BreachMaReads Data BreachMariner Wealth Advisors Data BreachMario Susi & Son Data Breach: At Least 175 AffectedMaritimeCSR Alleged Data ExposureMarkel Insurance 2026 Data BreachMarket Moveis Data BreachMarketsMojo Alleged Data ExposureMarquis Software Solutions 2025 Data BreachMarriott International Data BreachMarshfield Clinic Data BreachMary Evans Picture Library Alleged Data ExposureMascot App 2022 Data BreachMasedWorld Minecraft 2021 Data BreachMashable Data BreachMasTec Data BreachMaster Deeds Data BreachMastercard Priceless Specials Data BreachMATARKA Alleged Data ExposureMatch Group Data Breach: Hinge User DataMatchUSA 2018 Data BreachMate1.com 2016 Data BreachMathspace Data BreachMathway 2020 Data BreachMaxance 2024 Data BreachMaximus Nebraska PDMS 2026 Data BreachMazda Thailand Warehouse 2026 Data BreachMazzola Mardon Data BreachMC2 Data Data BreachMCBans Data BreachMCBS 2025 Data BreachMcEwen & Associates Data BreachMcGraw Hill 2026 Data BreachMcKesson 2026 Data BreachMcLaren Health Care 2024 Data BreachMCLeaks 2017 Data BreachMcLeod Physician Associates II - Dillon Family Medicine 2025 Data BreachMCResolver.pw Alleged Data ExposureMDPI Data BreachMecho Download 2013 Data BreachMedela Data BreachMedenet 2026 Data BreachMedi-Rents & Sales 2026 Data BreachMediaWorks Data BreachMedibank Data BreachMedical Center, LLP 2025 Data BreachMedical Express PSI Data BreachMedikalyapı Healthcare Investments System Encryption & Data BreachMediSecure Data BreachMedPeds Associates of Sarasota 2025 Data BreachMedRevenu Data BreachMedStar Health 2025 Data BreachMedtronic 2026 Data BreachMedusind 2023 Data BreachMeetic Alleged Data ExposureMeetMindful 2020 Data BreachMefa Industrial Data BreachMefeedia Alleged Data ExposureMega-Torrent Alleged Data ExposureMemeChat 2022 Data BreachMemoryBreak Alleged Data ExposureMEO 2020 Data BreachMercadien Data BreachMercer Advisors Data Breach: 143K People AffectedMercor Data BreachMeridian Health Plan of Illinois 2026 Data BreachMerNetwork 2017 Data BreachMeta Instagram HTS 2026 Data BreachMethodist Homes May 2025 Email Data BreachMGM Resorts 2019 Data BreachMGM Resorts 2022 Update Data BreachMichigan Medicine 2026 2023 Data BreachMicrochip Technology Data BreachMid America Physician Services 2024 Data BreachMid Florida Primary Care Data BreachMid Michigan Medical Billing Service 2025 Data BreachMid-South Pulmonary & Sleep Specialists 2026 2025 Data BreachMidland Care Connection 2026 Data BreachMilitarySingles.com (2018) Data BreachMiljödata Data BreachMillcreek Pediatrics 2025 Data BreachMindJolt 2019 Data BreachMinecraft Pocket Edition Forum 2015 Data BreachMinecraft World Map 2016 Data BreachMinefield 2015 Data BreachMinehut 2019 Data BreachMinnesota Epilepsy Group (2026) Data BreachMinnesota Health Insurance Network 2026 Data BreachMinted 2020 Data BreachMiPC Mexico Data BreachMister Guns Data BreachMMG Fusion 2020 Data BreachMMOGames.com Alleged Data ExposureMMOKings.com Alleged Data ExposureMNG Kargo Data BreachMobiFriends 2020 Data BreachMobile Legends: Bang Bang Forum Data BreachMobilink (Jazz Pakistan) 2020 Customer Data BreachMoDaCo 2016 Data BreachModern Business Solutions 2016 Data BreachModMed Data BreachMoHackz Alleged Data ExposureMolecular Testing Labs Data BreachMon General Hospital 2026 Data BreachMon Logiciel Médical Data BreachMoney Bookers Data BreachMoneycontrol Data BreachMonidays January 2022 Alleged Data BreachMonmouth University Data Breach (At Least 1,673)Monogatari Corporation (Yakiniku King) Data BreachMonroe University 2024 Data BreachMoody Bible Institute Data BreachMop.com Alleged Data ExposureMorele.net Data BreachMortal Online Data BreachMorton LTC 2025 Data BreachMotility Data BreachMotor Controls Inc. Data BreachMount Royal University 2026 Data BreachMovie Forums Data BreachMovieBoxPro Data BreachMPGH Data BreachMPS Enterprises Data BreachMr. Cooper Data BreachMr. Green Gaming Data BreachMr. Joy Alleged Data ExposureMRA-Racing.org Forums Data BreachMrExcel Data BreachMSI Data BreachMSPAForums Data BreachmSpy (2024) Data BreachmSpy Data BreachMt. Spokane Pediatrics Data BreachMtGox Data BreachMuah.AI Data BreachMUJI (Ryohin Keikaku) Data BreachMultiplayer.it Data BreachMuMaYi Data BreachMurauchi Data BreachMuscle Nutrition Alleged Data ExposureMuslim Directory Data BreachMuslim Match Data BreachMy Lovely AI Data BreachMyCastingFile (2020) Data BreachMyFHA Data BreachMyFitnessPal Data BreachMyHeritage Data BreachMyLloyd 2016 Data BreachMyPertamina 2022 Data BreachMyPirata.me Forums 2019 Data BreachmyRepoSpace 2015 Data BreachMySpace 2008 Data BreachMytheresa 2026 Data BreachMyVidster (2015) Data BreachMyVidster (2025) Data BreachPalestine Ministry of Health 2023 Data Breach