Fraud is an old problem. And this until now is very difficult to eliminate. I think security is the main thing to store digital assets. I am always cautious about doing things and not being easily tempted with results that are of great advantage. I am grateful that until now have not experienced any fraud that made me lose a lot of money.
Yes, the best way to prevent various types of fraud in the crypto world is to never be tempted by the desire for quick and big profits, but we must be good at researching the invitation, because in the world of Cypto there are a lot of fraudsters, so you have to be careful.
It's hard to prevent fraud due to a fact that people have different issues. We can't deny it because even we already issued a warning, some will always doesn't follow rules. This is how life works, there is always a victim and nobody can stop it in 100%.