Due to the increased popularity of cryptocurrencies, there has been an increased number of scammers both in terms of ICOs and in social media. You would find "official" representatives that would "propose lucrative deals" in the name of the legit company. There is only one result as a consequence - you losing your assets.
Thus, always keep in mind that real official channels of communications work. Also, if you see those posts in social media promising returns without a legit background (a.k.a. a full-blown platform) is a sure way to lose money. Creating bots on Facebook, Twitter, and Telegram is quite easy these days. Make sure not to repeat mistakes that others made before you https://www.cryptocointrade.com/
Not to mention mining pools and app scams going on right now. Some of the Facebook groups that were excellent in terms of trading discussions now turned into scam marketing sites.