Data Breach Index (A–Z) – H
Explore 77 data breaches in the H group. Open a record for exposed data classes, affected account counts and recommended security steps.
H
Habbo.st Alleged Data ExposureHackBase Alleged Data ExposureHackerOne Navia 2025 Data Breachhackforums.net Data BreachHacking Team Data BreachHaijiao.com (2023) Alleged Data ExposureHakko Corporation Data BreachHallmark Data BreachHanscom Federal Credit Union Data BreachHarbin Clinic / NRS 2024 Data BreachHarbor Ohio Data BreachHarbor Regional Center 2026 Data BreachHarvard University Data Breach: 850,784 EmailsHathway Data BreachHauteLook 2018 Data BreachHave Fun Teaching Data BreachHavenly Data BreachHDB Financial Services Data BreachHeadHunter (hh.ru) 2018 Associated Resume DatasetHealth Now Networks Data BreachHealth Payment Systems 2025 Data BreachHealthcare In Action 2026 Data BreachHealthcare Services Group Data BreachHealthEC 2023 Data BreachHealthEquity 2024 Data BreachHeart Care Centers of Illinois 2024 Data BreachHeart of America Eye Care 2026 Data BreachHeart South Cardiovascular Group Data BreachHeartland Health Center Data BreachHeatGames Data BreachHello Cake Data BreachHelloWork (2025) Data BreachHematology Oncology Consultants Data BreachHemmakväll Data Breachhemmelig.com Data BreachHenry Rossi & Co. 2026 Data BreachHeritage Bank 2026 Data BreachHeroes of Gaia Data BreachHeroes of Newerth Data BreachHertz 2024 Data BreachHexui Alleged Data ExposureHiAPK Alleged Data ExposureHigh Point Treatment Center 2025 Data BreachHightower Advisors Data Breach: 131,483 People AffectedHilldun Data BreachHillwood Development Company Data Breach (2026)Hims & Hers Zendesk 2026 Data BreachHive Workshop Data BreachHjedd Data BreachHKGolden Data BreachHLTV Data BreachHMC Farms Data BreachHome Chef Data BreachHomeRefill Data BreachHongFire Data BreachHookers.nl Data BreachHopamedia Data BreachHopponWorks Alleged Data ExposureHorse & Hound Forum 2017 Associated DatasetHorse Isle Data BreachHospital Caribbean Medical Center Data BreachHostinger Data BreachHot Topic Data BreachHoundDawgs Data BreachHouston City College 2026 Data BreachHouzz Data BreachHTC Mania Data BreachHTH Studios Data BreachHub4Tech Data BreachHudson Valley Medical Billing & Credentialing 2026 Data BreachHugging Face 2026 Security BreachHunter Associates Data BreachHunter Health Clinic Data BreachHuntStand Data BreachHurb Data BreachHusky Owners Data BreachHypertherm Data Breach