In one of the instances of a physical security breach rather than an electronic one, the Bank of New York Mellon simply lost a tape. In February 2008, the company sent 10 unencrypted backup tapes to a storage facility. When the storage firm's truck arrived at the facility, however, only nine tapes were still on board. The missing tape contained social security numbers and bank account information on 4.5 million customers. Oops.