There are some telegram groups which is filled by scammers they will do scam in the name of conversion or exchange so avoid of this types of scams
And phishers pretending to be official support from big main channels (ie. Binance, Bitmain). They are lurking waiting for people in trouble and then PM them trying to "Help" when you post a genuine issue in the main channel. Its usually safe to simply ignore all PMs, like on IRC, discuss your troubles in the public channel, and never give away logins/passwords.