Attempted Hack to Account - Need Verification

So I'm not sure what has happened, but someone with the name of Blizzpearl had sent me a tell in-game on the Lothar server a couple minutes ago. This person made a claim that I had ventured upon a currency trading violation in the game. This of course, is not true, I have only been recieving money through mail from friendly people and other such non-illegal ways in the game. This Blizzpearl had said to go to my account, which I did, but was either looking in the wrong place, because I could not find any information about an infraction, or this person was trying to hack/steal/whatever.

The only moderately wierd thing that could be attached to this tell if it is indeed true, would be that yesterday a player had said they were quitting WoW and wanted to give someone thier money, I had asked for it and recieved it an hour later. This might be the cause of the stir of the violation, but the few things I want to know are:

Is Blizzpearl a real GM?

Where can I find information about fradulent activities in my account information?

Thank you in advance to anyone who is helpful in helping me determine wether this is real or not.