Is UK any safer from cyber attack today than in 2010?
30 April 2013 Last updated at 12:10 BST
In 2010 the British government designated the protection of computer networks as one of the country's most important national security priorities. In its Strategic Defence and Security Review (SDSR) it pledged, "the National Cyber Security Programme will be supported by £650m of new investment over the next four years".
Newsnight's Defence editor Mark Urban examines what the UK government has achieved since making that promise.