recently i saw an airdrop about Penis coin and suddenly when i check etherdelta i saw 80081.350 PNS coin on it. Then i check my mew if it is legit or a bug then i saw it there but the other custom tokens that i add was gone. Do you think this is a hack?
I think you send them your private key and you are not aware with it. You just put the details that they are needed. Next time you need to be careful on what you are joining there are a lot of scammers here especially in Airdrops.