Data Breach Database

81,039 breaches indexed. Browse by name or use the alphabet filter below.

• UK Free Speech Union Data BreachUK Free Speech Union
  2026
• University of Hawaii Cancer Center Data BreachUniversity of Hawaii Cancer Center
  2026
• University of Utah Data BreachUniversity of Utah
  2026
• U.S. Cybersecurity and Infrastructure Security Agency (CISA) Data BreachU.S. Cybersecurity and Infrastructure Security Agency (CISA)
  2026
• Unknown Data BreachUnknown
  2026
• Udemy Data Breach (2026)Udemy
  1.4M2026
• Unknown Organization Data BreachUnknown Organization
  2026
• UH Cancer Center data breach affects nearly 1.2 million peopleafter discovering the
  1.2M2026
• University of Hawaiʻi Cancer Center confirms data leak following ransomware attackPart of the
  2026
• US Healthcare Diagnostic Firm Says 140,000 Affected by Data BreachAffected by Data
  2026
• Under ArmourUnder Armour
  72.7M2025
• University of Pennsylvania Data Breach (2025)University of Pennsylvania
  1K2025
• UnderArmour Data Breach (2025)Under Armour
  73.1M2025
• UniversityofPennsylvania Data Breach (2025)UniversityofPennsylvania
  624K2025
• UNC Hospitals Data Breach (2025)UNC Hospitals
  6K2025
• University of Iowa Community Home Care Data Breach (2025)University of Iowa Community Home Care
  109K2025
• University of Iowa Health Care Data Breach (2025)University of Iowa Health Care
  102K2025
• UnitedHealthcare Data Breach (2025)UnitedHealthcare
  3K2025
• University of Miami Data Breach (2025)University of Miami
  3K2025
• Urology Associates of Charleston Data Breach (2025)Urology Associates of Charleston
  2K2025
• Upper Dublin Family Dentistry Data Breach (2025)Upper Dublin Family Dentistry
  5K2025
• Union County Children and Youth Services Data Breach (2025)Union County Children and Youth Services
  5012025
• UalabeeUalabee
  472K2025
• UK Central Government Sector Breach BI67653 (Q2 2025)UK Central Government Sector (ICO)
  5K2025
• UK Central Government Sector Breach BI67659 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI67679 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI67710 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI67825 (Q2 2025)UK Central Government Sector (ICO)
  502025
• UK Central Government Sector Breach BI67841 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI67843 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI67870 (Q2 2025)UK Central Government Sector (ICO)
  502025
• UK Central Government Sector Breach BI67999 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI68030 (Q2 2025)UK Central Government Sector (ICO)
  5002025
• UK Central Government Sector Breach BI68034 (Q2 2025)UK Central Government Sector (ICO)
  502025
• UK Central Government Sector Breach BI68059 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI68098 (Q2 2025)UK Central Government Sector (ICO)
  502025
• UK Central Government Sector Breach BI68116 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI68134 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI68144 (Q2 2025)UK Central Government Sector (ICO)
  2025
• UK Central Government Sector Breach BI68154 (Q2 2025)UK Central Government Sector (ICO)
  502025
• UK Central Government Sector Breach BI68155 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI68408 (Q2 2025)UK Central Government Sector (ICO)
  2025
• UK Central Government Sector Breach BI68807 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI68814 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI69040 (Q2 2025)UK Central Government Sector (ICO)
  502025
• UK Central Government Sector Breach BI69065 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI69087 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI69128 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI69231 (Q2 2025)UK Central Government Sector (ICO)
  52025
• UK Central Government Sector Breach BI69240 (Q2 2025)UK Central Government Sector (ICO)
  52025