Obama heads to Silicon Valley to discuss hacking threats with CEOs

By Jeff Mason SAN FRANCISCO (Reuters) - President Barack Obama will meet with chief executive officers on Friday at a summit in Silicon Valley held by the White House that aims to build support for beefing up cyber security laws in the wake of massive hacks at Target Corp , Sony Corp and Anthem Inc . Obama will make the case that the private sector and government need to do more to share data about cyber threats in a speech before a crowd of more than 1,000 people from corporations as well as pr