Data Breach Index (A–Z) – M
Explore 156 data breaches in the M group. Open a record for exposed data classes, affected account counts and recommended security steps.
M
Mac Forums Data BreachMac-Torrents Data BreachMacGeneration Data BreachMadera Community Hospital 2025 Data BreachMadison Square Garden Sports Data BreachMagicDuel Data BreachMagMutual 2026 Data BreachMaiestas Alleged Data Exposuremail.ru Dump Alleged Data ExposureMainline Health Systems 2024 Data BreachMajorGeeks Data BreachMalakye Alleged Data ExposureMalindoAir Data BreachMALL.cz Data BreachMalwarebytes Data BreachManga Traders Data BreachMangaDex Data BreachMangaFox.me Data BreachMangaToon Data BreachManipulated Caiman Spam Data ListMapExpert Alleged Data ExposureMappery Data BreachMarcus & Millichap 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 BreachMarshfield Clinic Data BreachMary Evans Picture Library Alleged Data ExposureMashable Data BreachMasTec Data BreachMaster Deeds Data BreachMastercard Priceless Specials Data BreachMATARKA Alleged Data ExposureMatch Group Data Breach: Hinge User DataMatchUSA 2018 Data BreachMate1.com Data BreachMathway Data BreachMaxance 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 Data BreachMcKesson 2026 Data BreachMcLaren Health Care 2024 Data BreachMCLeaks Alleged Data ExposureMcLeod Physician Associates II - Dillon Family Medicine 2025 Data BreachMCResolver.pw Alleged Data ExposureMDPI Data BreachMecho Download Data BreachMedenet 2026 Data BreachMedi-Rents & Sales 2026 Data BreachMediaWorks Data BreachMedical Center, LLP 2025 Data BreachMedical Express PSI Data BreachMedPeds Associates of Sarasota 2025 Data BreachMedRevenu Data BreachMedStar Health 2025 Data BreachMedtronic 2026 Data BreachMedusind 2023 Data BreachMeetMindful Data BreachMefeedia Alleged Data ExposureMega-Torrent Alleged Data ExposureMemeChat Data BreachMemoryBreak Alleged Data ExposureMEO Data BreachMercadien Data BreachMercer Advisors Data Breach: 143K People AffectedMercor Data BreachMeridian Health Plan of Illinois 2026 Data BreachMerNetwork Alleged Data ExposureMeta Instagram HTS 2026 Data BreachMethodist Homes May 2025 Email Data BreachMGM Resorts (2022 Update) Data BreachMGM Resorts Data BreachMichigan Medicine 2026 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 Data BreachMidland Care Connection 2026 Data BreachMilitarySingles.com (2018) Alleged Data ExposureMiljödata Data BreachMillcreek Pediatrics 2025 Data BreachMindJolt 2019 Data BreachMinecraft Pocket Edition Forum Data BreachMinecraft World Map Data BreachMinefield Data BreachMinehut Data BreachMinnesota Epilepsy Group (2026) Data BreachMinnesota Health Insurance Network 2026 Data BreachMinted Data BreachMisattributed Flipkart Data Alleged Data ExposureMisattributed Habib's Data Alleged Data ExposureMister Guns Data BreachMMG Fusion Data BreachMMOGames.com Alleged Data ExposureMMOKings.com Alleged Data ExposureMobiFriends Data BreachMobile Legends: Bang Bang Forum Alleged Data ExposureMoDaCo Data BreachModern Business Solutions Data BreachModMed Data BreachMoHackz Alleged Data ExposureMolecular Testing Labs Data BreachMon General Hospital 2026 Data BreachMoney Bookers Data BreachMoneycontrol Data BreachMonidays January 2022 Alleged Data BreachMonmouth University Data Breach (At Least 1,673)Monroe University 2024 Data BreachMoody Bible Institute Data BreachMorele.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. Green Gaming Data BreachMRA-Racing.org Forums Data BreachMrExcel Data BreachMSI Data BreachmSpy (2024) Data BreachmSpy Data BreachMt. Spokane Pediatrics Data BreachMtGox Data BreachMuah.AI Data BreachMultiplayer.it 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 Alleged Data ExposureMyPertamina Data BreachMyPirata.me Forums Alleged Data ExposuremyRepoSpace Data BreachMySpace Data BreachMytheresa Data BreachMyVidster (2015) Data BreachMyVidster (2025) Data Breach