The researcher who discovered that is

http://cyberlaw.stanford.edu/about/people/jonathan-mayer

and

https://www.stanford.edu/~jmayer/

but I can't find anything he wrote related to the issue of this particular news item. Anybody knows?

He says he's still working on his writeup https://twitter.com/#!/jonathanmayer/status/1703680046458552...

He also links to the EFF coverage: https://www.eff.org/deeplinks/2012/02/time-make-amends-googl...

I hit a paywall before this article gave me any idea what actually happened. Fortunately, WSJ also made a blog post about the subject: http://blogs.wsj.com/digits/2012/02/16/how-google-tracked-sa...

If you get to the end of the post, it notes that two Google engineers were actually responsible for patching the loophole in webkit that allows storing third-party cookies after a form submission:

http://trac.webkit.org/changeset/92142

But if you try to read the previous 99% of the blog post you'll see how some shady advertising companies perpetually try to game the system without any user consent.