This is another example of an ounce of prevention is worth of pound of cure. One preventative measure is to avoid using the same passwords at different sites. That will prevent a data breach at one site from affecting your accounts at other sites. If your account does get hacked, Kim Komando has some tips in this article
. For bank accounts she doesn't provide many tips beyond the obvious tip of contacting your bank by phone or by visiting the branch ASAP. For other types of accounts (i.e. email), her tips are more useful.