I heard this is how GoonSquad scam-

GOON recruits a player with decent super rares, makes friends with them. Then does a legit trade with the player, then GOON or a another high ranked member (Mazi, Merp) then asks to "borrow" the players new super rare, then wazam! Their kicked and blocked.

Or they build trust with a member, convince them they don't scam. Then get the player to drop first, and then kick and block.