When an account has a lock badge, it means that it is protected, so you should not use this user's posts or refer to them within the forum, you will respect protected accounts.
If you see a protected account with stolen content, you can report their posts!
You can protect your account by clicking on this link: https://goldenvitality.flarum.cloud/get-role/rBfNvW9Z0sgKGkVA