since that time i have not used KYC anywhere, even had lost my account on an exchange which asked for KYC and i dont regret what i have done and lost few bucks there,
i think i may not do KYC in any other place, unless i can be sure that my information might be safe on that service (which surely wont be 100% as we had seen very big tech services facing hack attempts and leaked their customer information on black markets)
so whenever you wanted to do another KYC, be sure to double think for any possible consequences )
there are no valid exchange terms about how they keep users' data confidential, and kyc is a collective right of the system they are implementing, I also disagree, but it is also permissive for some reason, I only avoid the use of passports, for others it does not matter because the data does not apply in the urgency of global use.
You have to correctly choose where to use KYC, don't carelessly choose and use it, if you use KYC only for ICO I think it's funny,
we never know how the end of the ICO, it will be very risky if your data is scattered and traded!
If a project and an exchange platform provide security and legality for the security of your data, I think it's not a problem