Recently maybe 1 months I see strange users registration. They have strange email names and also their nik like CharlesSER, or MAckDRN or just any name but they exactly are not my website real users. I delete 10 of them during this month but they still appear every day 1 or 2 per day maybe.
Today I disabled user registration.
What can I do so this kind of users couldn't register. I had captcha before disabling user registration.
Also...maybe I 'm wrong, but several months ago when I had lots of this kind of users before purchasing Admin Tool Pro my site was hacked. I do not know is there any correletion.
What kind of settings do I need to stop this users?