Spam Entries in Guestbook

[mariokrupik]

Hi Jan,

since a few weeks I get a few Spam entries in my Guestbook. Captcha is enabled, the only thing i changed is that I only use lowercase letters and numbers, could this be an Issue?

Mario

[Jan]

Hi, there is no 100 % protection against spam, some spam can by added by human too, some software can read the letters from the image.... so you never get the 100 % protection... the using of both types of letters (lower, upper) will increase the protection, the combination of standard and math captcha too...
https://www.phoca.cz/documents/3-phoca-g ... -from-spam
Jan