Web Summit 2017: Privacy vs security

In this special edition of People & Profit, we're at the web summit in Lisbon, one of the world’s biggest technology conferences. Stephen Carroll speaks to the founder of Mozilla, Mitchell Baker, about the fight for online freedom. We also meets US Federal Trade Commissioner Terrell McSweeny, whose job is to protect consumers and keep the tech giants in line. Plus, we talk cyberattacks with Nicole Eagan, the head of security firm Darktrace, whose defences are based on the human immune system.