[wp-trac] [WordPress Trac] #17667: Reducing spam by requiring referrer in wp-comments-post.php

[WordPress Trac]

#17667: Reducing spam by requiring referrer in wp-comments-post.php
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 Reporter:  BenChapman         |       Owner:
     Type:  enhancement        |      Status:  closed
 Priority:  normal             |   Milestone:
Component:  Comments           |     Version:  3.2
 Severity:  minor              |  Resolution:  wontfix
 Keywords:  2nd-opinion close  |
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Comment (by ocean90):

 6 years ago we had already removed the referrer for comments, same reason,
 see #1673.

 Also many plugins already includes a referrer check.

 Code snippet:

 {{{
 function my_verify_comment_referer() {
         if ( ! wp_get_referer() )
                 wp_die( 'You need to enable referrers in your browser.' );
 }
 add_action( 'pre_comment_on_post', 'my_verify_comment_referer' );
 }}}

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Ticket URL: <http://core.trac.wordpress.org/ticket/17667#comment:4>
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