Robots bypassing mandatory fields

Hello guys,
I know it's got little to do with Chronoforms as this happens with many forms for that matter, I just wondered if there's a way to prevent robots bypassing the mandatory fields I set in my forms, I even set a verification code and they still can send me the form with virtually no fields completed, mandatory included. It's not a huge deal, but still annoying..

If it can be of any help I'm using:
Joomla! 3.4.1
Chronoform Component 4.0.6
Chronoform Plugin V4 RC3.5.3
Chronoform Module V4.0.3

Just to complete the info, if I try myself submitting the same form there's no way I can bypass the mandatory fields, weird how they do it.

Hi Alistair,

Please see this FAQ

Bob

PS To submit and bypass the mandatory validation disable JavaScript in your browser.