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 cybersecurity 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 priva