Skip to content

Onix Group

Disclosed May 26, 20233 years ago387,830 affectedConfirmed

Official notice

What is known

People affected387,830 (as reported to HHS)
DisclosedMay 26, 2023
DiscoveredJun 9, 2023
HappenedMar 20, 2023
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Source
Notice letter filed with the Delaware DOJ: Onix Groupattorneygeneral.delaware.gov · Official notice
HHS OCR breach report (archive, resolved): Onix Group (Business Associate, PA)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
HHS archivetotalMay 26, 2023387,830
Delaware DOJresidents of DEJul 10, 20237,948
History of this record
  • 2026-09-25 · sector: other to health · backfill source
  • 2026-09-25 · attack: unknown to hacking · backfill source
  • 2026-09-25 · data_types: ["names"] to ["names","health"] · backfill source
  • 2026-09-25 · records_basis: empty to hhs · backfill source
  • 2026-09-25 · records: empty to 387830 · backfill source
  • 2026-09-25 · disclosed: 2023-07-10 to 2023-05-26 · backfill source
  • 2026-09-25 · added · backfill source

First seen 2026-09-25 (Delaware DOJ), confirmed by Delaware DOJ. Record counts are as reported. Not legal advice.

Everything about Onix Group

New breaches by email

Wednesdays, only in weeks with newly disclosed breaches, the largest first.

Double opt-in. Unsubscribe any time.