KYC is indeed needed for account verification in the exchange. And if you want to participate in IEO, the account must first verify. And I have never done IEO in exchange without requiring KYC. Binance, Probit, Bittrex all three exchanges all require KYC for those of you who want to participate in IEO.
KYC is indeed needed in verifying the authenticity of users, so if investors want to invest in IEO then they must do KYC first. I think if you do a kyc on a large exchange of data that you enter remains safe, because the level of trust in a exchanger that has a good rating is certainly trustworthy