Although credit card details and online bank account login information are clearly obvious keylogging targets, you should not underestimate the dangers of personal information being used maliciously. In fact, there have frequently been cases where criminals searched a compromised email account and even sent emails from it to collect in order to get more personal information about the user. For example; often security questions from banks and other companies are along the lines of what is your favorite food? Or what's your mothers maiden name?