Of course it can be used into something else,worst would be sold in the deepweb! so dont expect these people will delete all the files after the ICO or bounty has ended,these people are unknown so you wont know which one would be responsible if the data has leaked,and your identity where taken away from you,best thing to do is to send fake IDs if you really want to claim the rewards so you will be safe from further damages in the future.