First of all everything in this world is a risky gamble..every kind of investment are risky too ...but ofcourse for you to be able to manage risk in every investment especially in crypto currency you have to every little thin in it up to the biggest once ..how is it work.is it scam or not..and most importantly dont ever ever trust to anyone that says to you give them money and they can doouble it...so all you need to have are awareness and commonsense..
In short, do not fall for HYIP (High Yield Investment Scams), Scams or platforms which are too good to be true. Example is earning more than 5% every day, that means accumulating almost 150% increase in your assets in a month, double your bitcoin or assets for just a short period of time, just have commonsense and idea of where do these people get the money he/ she will paid to me.