The Illinois Department of Human Services (IDHS) inadvertently exposed the personal information of over 700,000 residents due to a security lapse that lasted from April 2021 to September 2025. This lapse made an internal mapping website publicly viewable, revealing data such as addresses, case numbers, and demographic information of Medicaid and Medicare Savings Program recipients, although names were not included. Additionally, information about 32,401 individuals receiving services from the Division of Rehabilitation Services was also compromised. IDHS has not confirmed if any unauthorized parties accessed the data during the exposure period, highlighting significant concerns about data privacy and security. This matters because it underscores the importance of robust cybersecurity measures to protect sensitive personal information from unauthorized access.
