The University of Florida is sending letters to more than 11,000 current and former students to notify them that their Social Security numbers, names and addresses were accidentally posted online.

University officials said Tuesday that the privacy breach was recently discovered during a routine systems audit.

The information became available when former student employees of the Office for Academic Support and Institutional Service, or OASIS, program created online records of students participating in the program between 2003 and 2005. The information has been removed.

School officials said the notification letters were being sent to about 11,300 students whose information is believed to have been compromised, but they were unable to find contact information for about 570 people.