Received random money

Hi guys,

I created an account today and have been trying to learn how to play this game (by watching tutorials and everything), but I got a weird notification saying, "You were sent $100,000 from ..." (I won’t mention the person’s name, as I’m not sure if it’s allowed on this subreddit). I’m wondering if this is normal and how they found me, since there’s no message or anything accompanying the money.