If you are investing in ICOs or just even attending airdrops, please be careful with telegram direct messages.
When you join a telegram group, a fake account with the same name and picture of the group admin might send you a message, this can only be a friendly welcoming message.
These fake admins can ask give you some ETH addresses to send your money, to buy the ICO tokens or only to donate airdrops, or even your MEW private key...
*2 days ago, I joined bitfinex telegram to ask some questions. I directly got a dm from an admin looking scam account, it was only a welcoming message. Reported immediately