Just recently I saw an ICO that asking a monthly income and bank account statement for a KYC. It's said on their KYC form that it is important for them to know the financial capacity of their token holders or buyers.
What can you say about this requirements?
Somebody here did it before?
Never ever give your bank account statement for KYC because they can use it in illegal activities. Better buy altcoin or token after the coin is added in an exchanges, sometimes you can buy lower than ICO price and you don't have to worry that your personal papers are being compromise.