The Identity Theft Resource Center has reports that cover last year and information about past data breaches with prominent companies. The ITRC has information on what to do if your id is stolen. Link
“The Identity Theft Resource Center recorded 662 breaches on its 2010 ITRC Breach List. It is apparent, with few exceptions, that there is no transparency when it comes to reporting breaches. Other than breaches reported by the media and a few progressive state websites, there is little or no information available on many data breach events. It is clear that without a mandatory national reporting requirement, that many data breaches will continue to be unreported, or under-reported.” Read more..