It is a good idea to periodically check your workstation for sensitive information. This is especially true if you have worked with this data in the past.
Contact IT Security or the Service Desk for assistance.
Identity Finder (Mac, Windows): http://www.identityfinder.com/us/Home/Downloads/FreeEdition
SENF! The Sensitive Number Finder (Mac, Windows, Linux): https://senf.security.utexas.edu/
Cornell Spider (Mac, Windows, Linux): http://www2.cit.cornell.edu/security/tools