O.k, I have run this through in my head and it doesn't seem to, well, logical... but I found a way to get a stolen or hacked, OR bought account's (Wherever you got the account doesn't matter) last name.
IF THIS IS A REPOST PLEASE DELETE THIS THREAD
I was rummaging through my credit cards and had to change the expiration date because it ran out. I received an email from blizzard on my account that I bought that my credit card expired/declined and it gave me the whole first middle and last name and all the information.
Account name: *******
Account Holder: ********
Registered Email: ********@YAHOO.COM
Subscription Type Attempted: 1 Month Recurring
Date Attempted: Apr 15, 2008
Credit Card Type: VI
Last 4 Digits of Credit Card: ********
Result Code: 522
It sent all the information that I blocked out with stars for my own protection. So, I hope this helps and gives you ideas with things to do, because my imagination has been sucked out by of my mind by viral videos so I can't think of anything. And of course please don't give me rep if this is a repost.