I recently updated a client's website with a brand new site design and realized several days later that this new design did not contain their Google Analytics tracking code.
For curiosities sake, I opened Google Analytics and to my surprise found that I was still receiving hits (although very few, ~10 a day).
How do I determine what is sending this data to GA? It certainly isn't my site. The URLs specified under the "Behavior > Site Content > All Pages" tab don't even exist on my site and the 404 page that comes up when I access them doesn't have GA tracking code on it.
Is there some way to view GA activity audit information or by some other means determine what is sending these hits?