The story
On December 1, 2021, Battelle for Kids was affected by a ransomware attack which accessed data stored about Chicago Public Schools students. Clients were informed nearly 7 months later. On May 20, 2022, CPS announced that Battelle for Kids suffered a ransomware attack and did not act on the information per their agreement with CPS. CPS continues to use BFK storage services.
From Wikipedia’s article on Battelle for Kids, shared under CC BY-SA 4.0.4