Why do you seem too afraid of KYC exchange? Don't they state the guarantee of your data security on the exchange? You can choose top exchanges with a good reputation if you want to ensure your KYC data be safer. Those top exchanges surely won't sell your data or share it with scammers, they know how to keep their members' trust. It is also the reason why most top exchanges regularly update their security system. I think we don't be so afraid of KYC exchange, it is not needed.