Improve "Talks & Writings" Section

[mhils]

The Talks & Writings section on mitmproxy.org needs an overhaul at some point. This issue collects things which are not on the page at the moment, but we ultimately want to link to.

https://duo.com/blog/out-of-box-exploitation-a-security-analysis-of-oem-updaters

If you built something with mitmproxy, please feel free to comment here so that we can add it! 😃