I've been using Contact Form 7 for awhile and love it. However, it seems that the CAPTCHA security has been weak as of late. My site has been hit HARD with all kinds of spam for things ranging from porn, viagra, to even businesses trying to sling coffee beans.
Is there a way to increase the security level or upgrade the CAPTCHA to a version that is more powerful? I woke up this morning to my site being spammed with over 300 advertisements for viagra. :\