Anyone have same issue? My forum is being under attacked by bots. They register new accounts for every hour. I have Google reCapcha2 enable and even tried some JavaScript/Ajax to prevent but still got new bot accounts registered.

I checked my web access log and all of the bot request weren't from normal browser, hence they weren't prevented by JavaScript/Ajax. You can check my register link, you can't register it if you don't provide a correct answer. But the bots can pass it https://nguoianphu.com/user/register

I believe this codologic forum is being under attacked also, see these users.

https://codologic.com/forum/index.php?u=/user/profile/17305
https://codologic.com/forum/index.php?u=/user/profile/17304
https://codologic.com/forum/index.php?u=/user/profile/17303
https://codologic.com/forum/index.php?u=/user/profile/17302
https://codologic.com/forum/index.php?u=/user/profile/17301

@djonwick , do you have the same issue?

The bot has created a hundred accounts daily

https://codologic.com/forum/index.php?u=/user/profile/17470

Hi

You can enable admin approval for users. However its strange they are able to circumvent captcha like that on your forum.
We have not enabled captcha in our forum so the bots are able to create accounts.

We might have to provide alternative bot protections systems in the future if google recaptcha is not good enough

Thanks for checking, @admin !