They have published blog posts on google products before (just glancing at that page, you can see there is one about chromeos). You can also see in the dom fuz

They have published blog posts on google products before (just glancing at that page, you can see there is one about chromeos). You can also see in the dom fuzzing blog post this page links to (https://googleprojectzero.blogspot.com/2017/09/the-great-dom-fuzz-off-of-2017.html https://googleprojectzero.blogspot.com/2017/09/the-great-dom...), that they fuzzed chrome as well and found bugs. But they really just don't publish that many blog posts in the relative scheme of things, relative to the number of issues they find/report. They find and report (publicly) plenty of Google product issues. So i'm not sure you can really draw anything just from the small sample of blog posts they do write.