If you get a Facebook friend request from someone you thought you were already friends with, it may be a hacker trying to steal information.
Malicious users are copying profiles and then "friending" the victim's friends on Facebook. At first glance, it seems like someone you know. The would-be thief, who appears to be a friend, will likely even mention that he or she has had to open a new account for some reason.
Then, they will start a conversation in an attempt to borrow money or arrange a meet-up. The scam isn't a new one, but it hasn't gone away, either.
Last year, the Better Business Bureau included a firsthand experience from writer Elizabeth Holton:
The Better Business Bureau advises that Facebook users be on the lookout for signs like poor grammar or spelling, strange wording and new friend requests from people you are already friends with. If you get such a request, check with the person to find out if they created a new profile.