Google’s announcement that it had been hit by cyberattacks from China and that it’s reconsidering its services in that country has smacked the world like a thunderclap: Why the drastic move? How will China respond? Will other companies with interests in China, such as Microsoft and Yahoo, follow suit? What does it mean for the future of cyberspace? Ron Deibert and Rafal Rohozinski write a piece in Friday’s Globe and Mail.