Google says is blocked 3.1 billion ads and restricted a further 6.4 billion ads in 2021.
We also continued to invest in our automated detection technology to effectively scan the web for publisher policy compliance at scale. Due to this investment, along with several new policies, we vastly increased our enforcement and removed ads from 1.3 billion publisher pages in 2020, up from 21 million in 2019. We also stopped ads from serving on over 1.6 million publisher sites with pervasive or egregious violations.
Google's ad safety report 2020 [
blog.google...]