Data Breach Index (A–Z) – U

Explore 48 data breaches in the U group. Open a record for exposed data classes, affected account counts and recommended security steps.

U

U.S. DOJ and DHS 2016 Data Breach Ualabee Data Breach Ubisoft.com Forum Alleged Data Exposure Ubook Data Breach UCAR Alleged Data Exposure Udemy Data Breach UFC Fight Club Forums Alleged Data Exposure UI Community HomeCare and UI Health Care 2025 Data Breach Uiggy Data Breach UK Department for Education 2026 Data Breach UK Government Investments 2025–2026 Data Breach UKScrappers Alleged Data Exposure Ulmon Data Breach Ultrahuman 2026 Data Breach UMass Amherst Data Breach UN Internet Governance Forum Data Breach Under Armour Data Breach Underworld Empire Data Breach Unico Campania Data Breach Unigame Data Breach Union Home Mortgage Data Breach United Medical Doctors 2025 Data Breach Universarium Data Breach University of California Data Breach University of Dallas Data Breach University of Hawaiʻi Cancer Center 2025 Data Breach University of Nebraska Medical Center Data Breach University of Nottingham Data Breach University of Oxford CareerConnect 2026 Data Breach University of Pennsylvania Data Breach University of Phoenix Data Breach University of St. Thomas-Houston Data Breach University of Sydney Code Library 2025 Data Breach University of the People (UoPeople) 2025 Data Breach Unix.com Forums Alleged Data Exposure Unlimited Technology Systems 2025 Data Breach Unreal Engine Data Breach UNSS (2026) Data Breach Unverified Data Source Alleged Data Exposure Upbound Group 2026 Data Breach Upstox Data Breach URentBike Alleged Data Exposure USA.Life Alleged Data Exposure USTA Texas Data Breach Utah Gun Exchange Data Breach Utair Data Breach uTorrent Data Breach uuu9 Alleged Data Exposure