Let me remind you that when you enter the game, you automatically agree with the rules. Namely:
1. When registering, it is strongly discouraged to create characters with the same nickname as your login. For example, if your username is User, then none of the characters should have the User name, because The first thing a fraudster will try when searching is to enter your nickname in the login field.
2. While playing and communicating on various Internet resources, try not to share information with other players that can help in cracking your password (if they have such a desire).
PS You yourself considered it necessary to provide data from the account, for which you paid. I have been playing aion for more than 10 years and during this time I have never been hacked, and all because I don't even give anyone a login from my account