Jan Koum, co-founder and chief executive officer of WhatsApp Inc., right, speaks as Brian Acton, co-founder of WhatsApp Inc., listens during the WSJDLive Global Technology Conference in Laguna Beach, California, U.S., on Tuesday, Oct. 25, 2016. The conference brings together an unmatched group of top CEOs, founders, pioneers, investors and luminaries to explore tech opportunities emerging around the world. Photographer: Patrick T. Fallon/Bloomberg via Getty Images
