The university of Chicago was under a massive cyber attack where unknown hackers breached the computer networks stealing personal details of staff and students.
The duration and exact date of breach has not been disclosed, but a letter from officials shows they learned about the breach on January 22, 2015.
Here’s a sample of the letter: http://ago.vermont.gov/assets/files/Consumer/Security_Breach/University%20of%20Chicago%20Security%20Breach%20Notice%20to%20Consumer.pdf