This was posted a few days ago and already made it to the front page: <a href="https://news.ycombinator.com/item?id=28001207" rel="nofollow">https://news.ycombinator.com/item?id=28001207</a>
Title is a little misleading. FB wanted better access through its incredibly sketch “VPN” spy app. While these are technically “its users”, the title seems to imply normal Facebook users as opposed to Onavo users.