Yes, I suspect Google has a pretty good idea of what IPs are in botnets. I used to work on detecting fraud traffic at an adtech startup and the impressions we g

Yes, I suspect Google has a pretty good idea of what IPs are in botnets. I used to work on detecting fraud traffic at an adtech startup and the impressions we got through Google tended not to include the botnets I could identify coming through other ad networks. (Granted, this was near the beginning of last decade and it's a constantly-evolving cat-and-mouse game.)