Before we start, we need to make it clear that this is for publishers using AdSense. First off, ensure that you have linked Google AdSense and Analytics accounts. Now, it’s time to track the invalid click sources.
Step 1: Sign in to Google Analytics.
Step 2: Go to Audience > Technology > Network > Select AdSense.
Step 3: Once you’ve selected AdSense, you’ll be able to see networks driving you — impressions, clicks, AdSense CTR, etc. Now, apply source/medium as the secondary dimension to know your traffic sources.
If you sort the report by Clicks, you’ll be able to see the network and traffic sources that drive you the most clicks. Identify and see whether you can block those with disproportionately higher CTR.
Pro tip: You can apply different secondary dimensions like the landing page, ad campaign sources, etc. to track down the pages and campaigns that need to be updated/blocked.