Most newbies always have mindset that cryptocurrency is just a ponzi scheme, that's why mostly people that get scammed are newbie, am not saying that people that have been long in Cryptocurrency don't get scammed but most people that I know that have complained to me that they have been scammed are newbies. Most newbies don't really have proper orientation about cryptocurrency before they jump into it, some of them will see their friends trading and he/she is making money, then they will also jump into it and whenever they start losing money, they get disturbed and if they come across any ponzi scheme they will decide to join and they will get scammed, before investing in Cryptocurrency you should have basic knowledge and you should know what it's all about.