If anyone claims me as a friend, expresses a vague acquaintance with my story (or even details as they are right here on this blog) don't assume it's true, ask me.
Con men use other people's name's like skeleton keys to unlock the door of opportunity. They climb them like stairs, and from each step leverage access to the next, maneuvering cleverly, to get close to key people who can vet them to others, to get assess to opportunity and funding. We more readily believe a big lie widely told, with ready grins and easy conversation.
If someone comes out of nowhere consider how they appeared and from where...