4:02 EST: Update: Confirmation by MasterCard they were spammed but they are not quite clear as to the "how" yet. The passwords were changed and a Tweet Apology has been issued...
MC Twitter
MC Twitter
MasterCard's Twitter Site sent me this direct message. Looks like their Twitter Account has been infiltrated. Maybe not. Just didn't feel compelled to click the link. Maybe I'm missing out on how to make some real money!
