Does anyone else get a lot of spam by "Carders" selling stolen credit card dumps, etc. Looks to me like it's a spam bot that's sending captcha/questions to people to answer when they come up. Not sure.
I reported some here yesterday. Other than that I have no open forums so no.
I had such spammers on my board regardless of the forums niche. They seem like spam bots but I had some cases when they will able to break through all my spam prevention measures. You could use the hotwords plugin, it helped me a lot with the carding spammers.
I used to get lots of spammers in past regarding carding and dumps
I used spam prevention plugins but then also they were too many of them
Manually i had to remove them