We saw increase in spam on our vbulletin. Bot generated through certain software (like Xrumer).
I am looking for someone to remove the reCAPTCHA and replaced it with a certain question that the user has to answer to register at the website. This combined with anti-spam plug-in.
And make sure you put new users into a usergroup which require moderation for the first 10 posts for example.
And any others solutions to stop this high spammer.
Small budget for this task