I use three points on which I then draw a conclusion:
1. read the whitepaper
2. analyze the development strategy and try to understand.
3. read biographies of the team and advisers.
This is usually not enough to protect yourself from scam. 1. read the whitepaper
2. analyze the development strategy and try to understand.
3. read biographies of the team and advisers.
I usually also check whether the data or team is fake. I search for the top management on Facebook, see whether I have common friends and ask them.
I also find out the location of the company, send them a good old mail via Post service and see what happens. There is no silver bullet.