Direct PDF: <a href="https://research.google.com/pubs/archive/44860.pdf" rel="nofollow">https://research.google.com/pubs/archive/44860.pdf</a><p>Usenix URL: <a href="https://www.usenix.org/publications/login/spring2016/osborn" rel="nofollow">https://www.usenix.org/publications/login/spring2016/osborn</a>