The Commons Defence Committee are warning the Government needs to take a more hands on approach to UK security.
Hearing evidence that entire combat units could be rendered completely dysfunctional by a cyber attack, they said details of contingency plans should be set out.
Given the inevitable inadequacy of the measures available to protect against a constantly changing and evolving threat ... it is not enough for the armed forces to do their best to prevent an effective attack.
In its response to this report the Government should set out details of the contingency plans it has in place should such an attack occur.
If it has none, it should say so - and urgently create some.
More top news
Experts say a trial into an early Ebola vaccine shows it is safe, but did not perform as well as had been hoped.
Frequent snowfall expected across much of the north this evening and strong northeasterly winds will make it feel noticeably cooler.
A Jewish leader was forced to escape from the camp through a window last night, when he was locked in during a TV broadcast.