I have big problems with bots registering in my forum and posting spam messages.
I recently set the option "Require validation by Admin", after which I was getting at least 50 requests per day.
I have increased the length of the captcha to 18 characters, which has reduced this down to around 5 per day, maybe less. Obviously, this is not friendly to real users.
This suggests to me that the captcha is being broken with a brute force attack.
Does Tiki have any feature to stop repeated attempts to enter the catpcha from the same IP-Address?
Are there any other measures against brute force attacks, or plans to add them?
Are other sites suffering from this kind of problem?
I am currently using Tiki 10.2,
thanks in advance