htaccess · Wordpress

Get rid of spammers: Semalt, kambasoft, savetubevideo…

***NEW! After many tries of different codes, I decided to contact my web host for that site ( and after a few tries they managed to block semalt. Unfortunately they did not disclosed how they did it. 

The codes I tested are at the end of the post.

If you find the right Regex, please send me a line.


I started receiving traffic in my new site from a site called Semalt. Something was odd about them, and after their first visits to my site, I started receiving visits from a, also odd as the site that was receiving the traffic is about Google Analytics for beginners and the referrer is about music downloads.

This type of sites are called referrer spam.

This technique involves making repeated web site requests using a fake referrer URL to the site the spammer wishes to advertise. Sites that publish their access logs, including referrer statistics, will then inadvertently link back to the spammer’s site. These links will be indexed by search engines as they crawl the access logs. (source:Wikipedia)

Never click on these links as they might lead to sites with virus or Trojans. Do instead a Google search on the link.

So, how do you do to get rid of the spammers?

The best way is to modify your .htaccess files and block them all together.

For that you will need to access your .htaccess file and copy a bit of code.

Log in your synology, and access FileStation and the directory where your wordpress files are stored and delete according to the previous step (I am using NetDrive to do this):

If you dont have a htaccess file, create one using note++:

delete files

Add the following lines (red text) to the beginning of your code. It should look something like this:

The code below blocked all semalt’s visits with the exception of : 

RewriteEngine On
RewriteBase /
RewriteRule ^index.php$ – [L]

# block spammers
RewriteCond %{HTTP_REFERER} (.)?(semalt|kambasoft|savetubevideo|seoanalyses).com$ [NC]
RewriteCond %{HTTP_REFERER} ^http://(([^.]+.)+)? [NC]
RewriteRule ^(.*)$ – [F]


Htaccess code that did not work

First try:

# block spammers
RewriteCond %{HTTP_REFERER} (.)?(semalt|kambasoft|savetubevideo|seoanalyses).com$ [NC]
RewriteRule . – [F]

Second try:

# block spammers
RewriteCond %{HTTP_REFERER} (.)?(semalt|kambasoft|savetubevideo|seoanalyses).com$ [NC]
RewriteCond %{HTTP_REFERER} [NC,OR]
RewriteRule . – [F]

3rd try:

# block spammers
RewriteCond %{HTTP_REFERER} (.)?(semalt|kambasoft|savetubevideo|seoanalyses).com$ [NC]
RewriteCond %{HTTP_REFERER} ^http://([^.]+.)* [NC,OR]

RewriteRule . – [F]

4rth try:

RewriteCond %{HTTP_REFERER} (.)?(semalt|kambasoft|savetubevideo|seoanalyses).com$ [NC]
RewriteCond %{HTTP_REFERER} [NC,OR]
RewriteRule .* – [F]

5rth try:

RewriteCond %{HTTP_REFERER} (.)?(semalt|kambasoft|savetubevideo|seoanalyses).com$ [NC]
RewriteCond %{HTTP_REFERER} ^http://(([^.]+.)+)? [NC]
RewriteRule ^(.*)$ – [F]


 Remove from Google Analytics (if you dont have access to htaccess)

Another really annoying consequence of  Referrer spam is that it will inflate your traffic like bots and spiders do, so if you don’t have access to your htaccess file, you can at least remove them from Google Analytics.

I have a tutorial on how to do this on my new site.


6 thoughts on “Get rid of spammers: Semalt, kambasoft, savetubevideo…

  1. Dear Ruth,
    To be under attack from spam is a real pain. But if you are prepared and have a solution that you just given me makes life on the internet a lot better. So THANK YOU !

    I found the site and have ofcourse subscribed 🙂



    1. Hi Brad,

      Thanks for your input!

      I really recommend to block them from crawling/accessing your site if you have access to the .htaccess file. The reason for this is that when they crawl your site, if not properly set up, they will add links to their sites (not nice sites all the time) so when the bots go to crawl your site, they will see the referrals to their site and increase their popularity. Some of this links land in pages with virus or other unpleasant content which you and your site don’t want to be associated with (it can hurt your rankings).

      By blocking them, we beat them at their game and hopefully stop them from doing this altogether.

      My links on how to block them from Google Analytics are not working at the moment, so if you don’t mind, I will use yours instead until they are up and running again.


    1. Thanks Joanne,
      I got tired of testing and asked my web host provider (this problem was not happen on this site, but on my site) to block them from their end. After a couple a tries, they managed to do it and I am not receiving any visits from semalt anymore.

      I looked at the Regex I tried and yours is on the list so for my site (multisite) it didn’t work, but thanks anyhow!


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