The fact is, my close friend, student in same university, created this account to me and give it to me to explore bitcointalk and doing postings and finally find design contests that suitable with my skill. He said I have full control of it and we share the password and username as we trust each other. BUT, after I find out the account is not under my control anymore, I tell my friend but he said he don't know.
You could have mentioned this in your first post as if what you are saying is true, this looks like the most obvious way you lost control of your account. If of course everything that you are saying is true.Good luck to the recovery team in untangling this case.
