Fraud always exists around our lives. to prevent this is not possible. We can only learn and regularly read the news to avoid being scammed. Knowledge is the best thing to prevent fraud.
I like what you say here, it`s not possible to prevent fraud. They existed before, they will be here in the future, and we can`t do much about it. Education, knowledge, awareness is the key to prevent yourself to fall into the trap. I wasn`t careful before so I was scammed couple times, I mean about cryptocurrencies, I trusted people too much and I got burned. Now I`m extra careful!