I work for a small electrical services company. On their wordpress based site, they have a webform (contact form 7). It seems like suddenly, about a month ago, I started getting a bunch of spam through the webform. Many messages with Russian text, many more from desperate marketers (if they were so good at marketing, they wouldn't need to spam webforms).
Aside from blocking the IPs of the offenders, I have added a honeypot to thwart off bots, then I added a plugin to prevent copying and pasting of text into the webforms to hinder the desperate marketers. The marketing messages still came, so then I added a captcha. STILL they (the desperate marketers) are spamming me.
Does anybody have any other ideas to prevent the spamming through the webform?