It is almost impossible to get a scam-free world. Every coin has two sides. So if there is good, there is bad as well. What we can do is just to minimize bad side. Relating to cryptocurrency scams, first of all we need strong regulations whereas scammers and frauds get punished. But sadly, scammers are walking free when they are guilty of scamming people. Second is we need to be aware of scam projects and frauds. We need crypto education.