There are people who want to take advantage of the popularity of bitcoin, they will victimize newbie who wants to make instant return.
I see there are HYIP or ponzi all over so be careful when investing, always check and study well the assets you are investing, I think it's better to join
in ICO or learn how trade.
Since Bitcoin is needed an extra work to make people well-understand the technology, Those people who have a better understanding of the technology exploit the newbies who lack understanding the technology. Actually, There is plenty a guide for newbie to dodge the scam, but I think it does not influence at all.