Kama SpamBlock

Effectively prevent automatic spam when a spam comment is posted with Kama Spamblock, a plugin that operates discreetly and remains completely invisible to users—no captcha codes required. The plugin not only blocks spam comments but also conducts thorough checks on pings and trackbacks to ensure the authenticity of backlinks.

Even if you are using an external comment system like Disqus, installing Kama Spamblock remains valuable. This is because autospam can be posted directly to the ‘wp-comments-post.php’ file, and the plugin serves as a robust defense against such comments.

1. 

   Plugin settings on standard WordPress Settings > Discussion page.

2. 

   Spam alert, when spam comment is detected or if the user has JavaScript disabled in their browser. This alert allows sending the comment once again when it was blocked in any nonstandard cases.

1.8.3

• FIX: XSS vulnerability fixed. Thanks to Wordfence for the report.
• IMP: Other minor improvements.

1.8.2

• Minor refactoring.

1.8.1

• Code refactoring.
• kama_spamblock__process_comment_types hook added.

1.8

• FIX: WordPress 5.5 support.

1.7.5

• FIX: bug with unique code comparison.
• Minor code fixes.

1.7.4

• CHG: changed sanitize-options-on-save function – sanitize_key() to sanitize_html_class() – it’s not so hard but hard enough…
• CHG: ‘sanitize_setting’ function call. Seems it doesn’t have back-compat for WordPress versions less than 4.7.

1.7.3

• FIX: options fix of 1.7.2.

1.7.2

• CHG: moved translation to translation.wordpress.org.
• ADD: new ‘unique code’ option.
• IMP: some code improvements.

1.7.0

• BUG: Last UP bug fix…

1.6.0

• CHG: check logic is slightly changed in order to work correctly with page cache plugins.

1.5.2

• ADD: deleted is_singular check for themes where this check works incorrectly. Now plugin JS is shown on all pages.

1.5.1

• ADD: JS included from a number of hooks if there is no “wp_footer” hook in the theme.

1.5.0

• ADD: Russian localization.