When a long-lost friend contacts you via Facebook Messenger, you need to stop and make sure they really are your friend and not a scammer in disguise who hopes to get you to send them personal information or possibly money. John Breyault with Fraud. org says the message starts something like this:“Hi, it’s your uncle Bob. I just wanted to tell you there’s this new government grant that you can get more information about, just text me your number and we’ll talk to you about it.