Masquerade
Bison is masqueraded as swan. This is a typical trick in social engineering attack. That's why scams in social network, email invite etc. are so successfully.
So, connect only those who you meet face-to-face with their social ID exchanged on the spot, never trust email inviting you to click links for recovery of access or incentive. If the scenario matches with what you need, validate with the sender first to stay secure....