Cambridge Analytica whistleblower says company worked with Corey Lewandowski, Steve Bannon

In a live interview with TODAY’s Savannah Guthrie, Christopher Wylie, a former employee of British company Cambridge Analytica, says the company misused personal Facebook data of some 50 million people to help influence the 2016 presidential election. Wylie says the company met with former Trump campaign manager (and current outside adviser) Corey Lewandowski, former chief strategist Steve Bannon as well as Russian oil companies.