How to block in Google Analytics google analytics

If you’re seeing referral traffic from in your site’s data, you’re not alone. is a domain name owned and used by to basically spam your Google Analytics data with fake referral traffic, known as ghost traffic. The reason why they do this is to get your attention and persuade you to visit the suspicious URL in your browser.

If you visit you will be forwarded to This new page asks you to submit your own website to “get your free website audit.” If you submit your site, you will be forwarded again to[search term]&ref=test2 and then to[project ID].

Once you are on the Semalt site you will be asked for your email address and other information. If you provide your email address you can expect unwanted email spam messages in the future.

Semalt has been fully engulfed in embracing the referrer spam indexing method as a way to advertise themselves for many years. The online business is notorious for spamming Google Analytics with fake data including keywords as well and they don’t seem to be slowing down any time soon.

Is referrer spam harmful?

Referrer spam may seem harmless or simply a nuisance but it can actually ruin your Google Analytics data by filling it with fraudulent information. For example, fake visitors from appear to visit only one page on your site and leave your site from the same page. This creates a 100% bounce rate and measures to 1 page per session. Visitors also average 00:00:00 length of a session, among other changes to various site metrics.

Create a filter in Google Analytics

Here’s how to create a campaign source filter to block all referral traffic in Google Analytics.

  1. Open your Google Analytics account and go to Admin > Filters (on the right side in the VIEW section).
  2. Click the + ADD FILTER button.
  3. Create a Filter Name such as “ filter” or “Semalt filter.”
  4. Select the Custom Filter Type.
  5. In Filter Field, find and select Campaign Source.
  6. In the Filter Pattern text box, add and click the blue Save button on the bottom of the web page.

To add multiple domain names to the same filter you can make a Filter Pattern similar to this with a | between each URL: | Example\.com |

Sean Doyle

Sean Doyle is a tech author and engineer with over 20 years of experience in cybersecurity, privacy, malware, Google Analytics, online marketing, and other topics. Sean's content has been featured in numerous publications.

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