Currently the only plug-in that supports CAPTCHA is the contact registration plug-in. Some sites have other forms (e.g. Contact Us) that have no captcha and are being spammed.
Another customer has reported the same issue, they are getting spam via a contact us form on their site. If they had CAPTCHA set up on the page it would stop the issue.
Another customer has reported the same issue, they are getting spam via a contact us form on their site. If they had CAPTCHA set up on the page it would stop the issue.