In Pictures: The worst data breach incidents of 20...
In-Home Support Services, state of California Dept. of Social Services
No. of records exposed: Personal information on 701,000 individuals receiving home care, which was in unencrypted microfiche form mailed by a HP processing facility to the State Compensation Insurance Fund, but the package was damaged in transit in May and some information found missing.
In Pictures: The worst data breach incidents of 2012 – so far