I have no idea why you were sent that warning if you have not bought from that vendor. They did post that message in the forums earlier today, I suspect their admission to keeping buyers details resulted in their immediate demotion too. I would suggest you contact SR support via the market site and inquire if there are any links between BlueGiraffe and the vendors you use. At the very least you should inform SR support you received this message, you may consider it necessary to take some precautionary measures all the same and assume your details have been compromised. Better to be safe than sorry, I would clean house if I were you.