University of Wisconsin database breach exposed SSNs of 60,000 former students and staff. University had discontinued use of SSNs in student ID numbers in 2008 to better protect identities. University retained information about affected individuals within the poorly protected database. University officials say they were made aware of an intrusion into the database in October and have not found the individuals responsible for the hack. Ohio State University announced a breach last week that exposed 760,000 students, alumni and staff at the university’s largest university.”]