16 March 2011 Updated at 21:05 ET
US cyber war defences 'very thin', Pentagon warns
US officials say government and private systems are attacked millions of times per day
Related Stories
Cyber war exaggerated says expert
Is cyber-warfare a genuine threat?
Oil and gas firms hit by hackers
The US military lacks the people and resources to defend the country adequately from concerted cyber attacks, the head of the Pentagon's cyber command has warned.
link-
http://www.bbc.co.uk/news/world-us-canada-12768617