Carnegie Mellon University is warning more than 5,000 students, employees and graduates that their Social Security numbers and other personal information may have been accessed during a breach of the school's computer network.
Carnegie Mellon discovered the breach on April 10. Spokesman Mike Laffin said that as of Wednesday, the school had no clear idea how long the system had been vulnerable. Officials say they have no evidence that anyone had used the personal information.
The affected computers had personal information for people who got graduate degrees from the Tepper School of Business from 1997 to 2004.
The computers also contained data on the school's current graduate students, doctoral applicants from 2003 to 2005, applicants to the Masters of Business Administration program from September 2002 to May 2004 and administrative employees.
Information about undergraduate students and professors was not compromised, the school said.
