Those who have all the necessary licenses. For me, this is of paramount importance. And in general, I think that this is the first thing that all people should pay attention to. Judge for yourself - it does not matter whether it concerns a casino, a bookmaker's office or just a cryptocurrency exchange, it is always important for a person to know that he is investing in a worthy enterprise. That is why, before opening a crypto-exchange in our country, you need to obtain permission for a Crypto license in Portugal
https://cryptolicense.net/crypto-license-portugal/ , so that everything will grow together further.