That's why you need to be more selective for what project do you invest.
Remember cryptocurrency is high risk high reward activity so make sure that you have prepare to loss and consider profit as the bonus.
Scammer is just like criminal that looking for the profit !
You are right, we must be careful about choosing the project which will be invested, we must dig in depth the information about the project, how about the website, whitepaper, and profile of the team
These are one of the best things you do before investing project having a good research in every corner on their documents had, scamming has always existed their target those weak people out there who are easily fooled to them. Well, we know how to manage our own risk so that is on our decision were we gonna put our investment in a right and profitable project.