Semalt Hijacks Computers to Launch a Referrer Spam Campaign

Chances are by now you’ve heard about “Semalt,” a dubious, self-proclaimed SEO tool, its unscrupulous behavior already having caused concern to many website owners. In what appears to be a large-scale, referrer spam campaign, Semalt is most commonly accused of ignoring ‘robots.txt’ directives and overbearing servers with a slew of suspicious-looking requests.

If you see a big spike in traffic in your analytics report ask you design firm to do the following: (If you are a NetCetra client just email jmahlmann@netcetra.com and I will

To block semalt.com from visiting your site and making havoc with your statistics add this to the end of your .htaccess file….

SetEnvIfNoCase Via evil-spam-proxy spammer=yes SetEnvIfNoCase Referer evil-spam-domain.com spammer=yes SetEnvIfNoCase Referer evil-spam-keyword spammer=yes SetEnvIfNoCase Via pinappleproxy spammer=yes SetEnvIfNoCase Referer semalt.com spammer=yes SetEnvIfNoCase Referer poker spammer=yes Order allow,deny Allow from all Deny from env=spammer
Jim Mahlmann

NetCetra LLC