You've probably read dozens of paragraphs on how the next great theater of war will be online rather than offline, and how China and the US are already battling each other for cyber supremacy. The truth is, though, unless you've actually been hacked, it's hard to appreciate just how real the prospect of cyberwar actually is. Now, though, a security company has produced a fascinating geographic map that shows you hacking attempts in real-time -- and sure enough, you really can see China waging cyberwar against the US.