https://www.cnbc.com/2017/12/01/uber-security-execs-depart-after-ceo-criticizes-practices.html >Two of Uber Technologies Inc's most senior remaining security executives resigned on Friday and another took medical leave after the company's new chief executive officer criticized past practices, a source familiar with the situation said. >The departures come amid a high-stakes legal battle with rival self-driving car company Waymo, an Alphabet Inc subsidiary.