City of Columbus breach affects around half a million citizens

A ransomware attack on the City of Columbus on July 18, 2024—claimed by the Rhysida group—disrupted municipal IT services and led to the exposure of sensitive personal and payroll data for roughly 500,000 people, including names, dates of birth, addresses, bank account details, and Social Security numbers; the incident prompted public scrutiny after a researcher disclosed stolen data and the city subsequently sued that researcher.