The new backlinks checker of the Google Webmaster Tools has a bug that lets you see all the backlinks of unverified sites, too. This allowed me to check all backlinks for Google.com, for example, and download the links table as CSV file. Even though I don’t see a security issue with this (the links are public to begin with), and even though the details of this bug have been posted on other sites, I’ll omit the specifics for now and rather alerted Google so they can fix this. But here are a couple of backlink counts I retrieved: