You seem to know now. How did you catch them? Did they do it up front or was it hidden, somehow?
Can you suggest a quick check?
My DNS ip address software stopped working. My ip4 hardware settings on my nic were changed to Googles DNS. The DNS software runs everytime I boot that PC. It stopped working a few days ago so it happened recently. I think that it was Google Earth.
I would not have knowingly allowed this because it would break my my DNS filtering service.
I was very surprised at how easily it happened. Once you control someone’s DNS, you can block sites that you deem unworthy.