Uber has named its first ever chief security officer -- a position the ride-sharing firm needed to fill yesterday, based on recent events. The company snatched the new hire, Joe Sullivan, from Facebook, where he held the same job title for five years. He also worked in a similar capacity for eBay before that. Starting in late April, he'll be in charge of tightening Uber's digital and physical security to keep not just the company, but also its customers and drivers safe. That likely includes ensuring the app can't be easily hacked for the sake of its passengers' sensitive data, as well as enforcing stricter measures in screening drivers, among other things.