there seems to be increasing amount of bots spamming here. for example this: https://forum.4game.com/showthread.php?t=14162&p=104495#post104495 vbulleting captcha was cracked long time a go. maybe try q & a: https://www.vbulletin.com/forum/sho...event-spammers-from-registering-on-your-forum just my 2 cents before this gets worse
we are aware of the situation but as with botting programs, there are always people working on cracking these things so they will always be a part of online forums.