Thread:Project:Support desk/Unwanted User Registration

I have a problem with fake users who modify my wiki pages (usually the Main Page) for spam.

I tried blocking the user registration page, but they continue to register (i also receive returning emails for they not having an email account), access to wiki and modify it.

Since i suppose they are bots, i also tried to set a rule to wait 4 days for an user to modify anything (if the user is "younger" than 4 days, it cannot modify anything)

thank you for help!