I had the same issue a few years ago on my site. It was really annoying. Google got me for "click fraud". I had some friends who were looking at my site in s

I had the same issue a few years ago on my site. It was really annoying. Google got me for "click fraud". I had some friends who were looking at my site in school. Some people clicked on adverts. Since these views were from the same school, Google probably thought they were the same computer/person. It really sucks.