Unity Health Plans Insurance Corporation, affiliated with the University of Wisconsin, discovered in December 2013 that an unencrypted external hard drive of medical records had disappeared. The records contained patient names, dates of birth, dates of service, and names of prescription drugs. Unity has notified the almost forty-two thousand individuals affected. The Department of Health and Human Services Office of Civil Rights has been notified of over 80,000 breaches since reporting began in 2003.
See Healthcare IT News article at “42K get HIPAA breach letters”