Illinois health department exposed over 700,000 residents’ personal data for years

Illinois health department exposed over 700,000 residents’ personal data for years

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Illinois Health Department Exposed Personal Data of Over 700000 Residents for Years

The Illinois health department admits to a major security failure, revealing personal info of over 700,000 residents for years without protection.

Health

Illinois: The health department in Illinois has a big problem. They let private information of over 700,000 people be seen by anyone online. This happened because of a security issue that lasted for several years.

The Illinois Department of Human Services, known as IDHS, discovered this problem on January 2. They found out that a website meant for mapping was open for people to see. This site showed information from April 2021 to September 2025. The health officials used this website to help distribute state resources.

The data that was exposed included details about 672,616 people who get help from Medicaid and Medicare Savings Programs. This information had their addresses and case numbers but did not show their names.

Along with this, information from 32,401 people in the Division of Rehabilitation Services was also visible. This included names, addresses, and case statuses. IDHS stated they do not know if anyone viewed this sensitive information while it was online.

Image Credits and Reference: https://techcrunch.com/2026/01/08/illinois-health-department-exposed-over-700000-residents-personal-data-for-years/