Basic captcha failing

Soldato
Joined
27 Dec 2005
Posts
17,316
Location
Bristol
Our site has recently started getting spammed (up to 10 emails a day) via the quick contact form at the bottom of our site at www.idoweddingfilms.co.uk.

I've already integrated a basic captcha which is neat and relevant, and this has always done the job in the past as it's good enough to prevent random bots and crawlers, and nobody would want to put enough effort into abusing it as there's no advantage in doing so.

Anyway we've just been getting random messages along the lines of "Thank God! Somenoe with brains speaks!", "All of these atrciles have saved me a lot of headaches." etc with random emails which I'm guessing we're supposed to be dumb enough to reply to or follow.

Firstly, how is it getting past the captcha? And secondly, based on that, how can I prevent it without going down the bulky and probably needless route of a full-blown third party captcha system?
 
only 6? so that means after a minimum of 6 tries they could get it....I'd investigate a better solution, and if it's only 6 then a person could write them down and put them into a spambot and done!

Yes, because there's no advantage to cracking/abusing the system unlike say a Gmail or forum registration.

It's worth mentioning that I've since changed the captcha images and it seems to have done the trick.
 
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