This is a normal thing, that’s why we as individuals has to be very careful. Centralized institutions will always tell you that they are offering the best of security, but at the end there will likely end up being an issue of identity theft where they will lose their customers' information to hackers. This is not an issue with only cryptocurrency exchanges, it happens everywhere, you sign up with your email and info and due to some hack or bug on their system they will expose your info.

I am always cautious these days with the kind of information I am putting online these days, so that I don’t end giving an information that will affect me later in the future.