EVERY American has an "account"!  If you have a SSN, you are in their systems because SSN are now issued AT BIRTH. 

Children, young people with no credit, people with any assets at all, people's 401k accounts, and bank accts will all be targets.  EVERYTHING everyone owns is at risk with this kind of breach.  

Assume YOU are at risk with this breach!  Maybe we should all call Lifelock ...