Interview: This is how to go dark, by an ex-MI5 agent who's done it

How to go dark, by an ex-MI5 agent who's done itWe live in a time when it's never been easier for people to get detailed information about us. We don't think twice about adding endless nuggets of facts about our lives to social networks, signing up to endless newsletters and allowing websites to track our moves over the web, so they can serve us up the same targeted ad time and time again. No wonder there's been a wave of tech of late that's cashing in on making sure we stay as private as possib