Exactly, have them chasing their tails and looking in all the wrong places.
I knew a company who outsourced all their stuff, they kept insisting that we send them files, kept telling them we don't send ANYONE files, but we do send swift messages. Even had to go to their office for a meeting about the files we send them. So somewhere in their building the previous developers had set up a server, which was receiving switft messages from us and writing them to a file. I don't know if they ever found the server.