The Commons Defence Committee Chairman told ITV Daybreak that the problem needs to be approached with 'vigour, energy and imagination'.
He said the Government is not yet showing this approach towards protecting cyber security.
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Arthur Simpson-Kent, 48, admitted killing Ms Blake and their sons according to his lawyer.
Two brothers have been arrested on suspicion of murder after their parents were found dead in their own home over the weekend.
The first man to be convicted of murder on the basis of DNA evidence should be moved to an open prison, according to the Parole Board.