On September 6, 2007, the Liberty Coalition discovered several files on a Virgina Tech server which appeared to contain potentially sensitive information for about 100 people, including 12 social security numbers. The files ranged from grading spreadsheets used by professors to team rosters, to the results of a survey about cell phone usage. Virginia Tech removed the most sensitive files within a month (ie, the files containing social security numbers), but left others online.
You can confirm whether you were affected by this breach by searching for your name at www.ssnbreach.org.
Source: www.ssnbreach.org.