Basically, the best way to avoid being scammed is to use common sense. The most common type of scam is where you are promised a large sum of BTC but the only way you can receive it is by sending the other person a smaller amount of BTC. They try to justify this by saying it is for some kind of fees but in reality they will just take your money and never give you any prize.
The use of common sense is not enough to avoid being a scam and scams are carried out through various ways, not by ROI promising investment only. The best way to avoid a been scam is to be informed about the strategy scammer, not the use of the common sense.
Well, all in all, --it is start with the
[common sense]. Through this instinct, you will notice that you are prone to scam and in fact, scams activities are there are too many factors to consider. As investors, our responsibility and extend our diligence to have further research if there is a potential project to invest in, not just by the hype of people. However, these are those things to consider and you perhaps begin to suspect if you heard this, asking money and asking your personal identity.
Yes, all in all it have to do with common sense but it doesn't start with it because if an investors is not fully aware of how crypto currency scammer operate his common sense will fail him and the last time I checked only naive scammer will start by asking money and personal ID without making his prey to trust him first. An example is ICO scam, it all start by investors trusting ICO before trust was abused and later ID was added.
Even if we exercise vigilance on each and every project, sometimes, we don't know the true motive of the dev team.
So to avoid being screwed, better invest on projects with active use case already or their app is already existing in the market.
Because most projects that are in alpha or beta stages, will never get out of this stage up until they abandon the project.
Projects that disclosed their team members don't mean that they will not screw people, because even if they are out of public, they can still run away because chasing them would be so much work to do. So they have the guts to show in public, because running after them in case, will only be futile. And they know it.