Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Illinois Department of Human Services

Disclosed Jan 9, 2026705,017 affectedConfirmed

Official notice

Illinois DHS map settings expose data of 704,017 residents

IDHS said internal resource-planning maps were publicly viewable due to incorrect privacy settings, exposing details of 672,616 Medicaid and Medicare Savings Program recipients and 32,401 rehabilitation services customers. Access was restricted in September 2025.

What is known

People affected705,017 (as reported to HHS)
DisclosedJan 9, 2026
DiscoveredSep 22, 2025
AttackExposed data
Data exposedNamesAddressesHealthOther
SectorGovernment · US
StatusConfirmed

Sources

Official noticeidhs.prezly.com
Notice to the media from Illinois Department of Human Services
Newsbleepingcomputer.com
Illinois Department of Human Services data breach affects 700K people
Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): Illinois Department of Human Services (Health Plan, IL)

Notices filed

TotalJan 9
Research704,017 people
TotalJan 9
HHS archive705,017 people
History of this record
records_basis2026-09-25
organization to hhsby backfillSource
records2026-09-25
704017 to 705017by backfillSource
Added2026-09-25
First recordedby seedSource

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

Everything about Illinois Department of Human Services