in some ICOs these cases often happen they are usually ICOs who fail and the end will sell your identity or be used for other actions without your knowledge, if you want to participate in the ICO you should be able to pay attention to it and be aware that KYC will harm you someday.
Very dangerous if it happens like that, that's a deficiency if an ICO requires KYC for all participants,
investors and the bounty hunter. But in other side, requires kyc is effective to reduce the Cheater in bounty campaign.