Duh? The system is *designed* for jack role switching. Every engineer who has ever worked with Intel HDA knows this. It's even in some UIs!https://twitter.com/Gizmodo/status/801822915155128321 …
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Due to how Intel HDA is designed chances are good you can turn on the mic preamp on the "line out" jack. They're flexible.
I've actually done this in the past, it's trivial with HDA-Analyzer. Never thought to spin it as a "security" issue though.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.