Here is an interesting bit of news about cyber security. Seems a Chinese government communications company hijacked 15% of the worlds internet traffic. There is some discussion about how this was done and the potential dangers.
Then there is this one. An amazing story of how its possible to remotely take over infrastructure control systems and possibly disable or reprogram them. More direct than simply stealing traffic, this sort of attack might result in immediate physical danger, from an unknown source, potentially more serious than 9/11.