Rana Foroohar is a business columnist for the Financial Times, analyst for CNN and author.

Her most recent book, ‘Don't Be Evil: The Case Against Big Tech’, addresses the question, how did the tech industry get to dominate our world so completely? 

Rana talks to Krishnan about the darker side of digital technology, why tech firms are the new banks and what can be done to stop the tech world getting out of control.