However recent attacks on US central command made to look like Islamist attacks were in fact made by Russia "ostentatiously flexing its muscles towards the West".
In evidence presented to the ISC, MI6 said Russia was conducting information warfare, such as its propaganda effort that Russia had not responsibility for the shooting down of Malaysian Airlines Flight MH17.
The UK prime minister, Theresa May, is travelling to Warsaw on Thursday (21 December) to discuss collective efforts to counter Russian disinformation.
Andrew Parker, director-general of MI5, told the ISC Brexit was complicated relations with European allies working with the UK on security. "Half of Europe is scared of terrorism and the other half is scared of Russia, and both halves want us to help them," he said, according to the Times.
ISC chairman Dominic Grieve MP said diplomatic consequences would keep cyber attacks by countries like Russia, China and Iran in check in the past but that "recent Russian cyber activity appears to indicate that this may no longer be the case. Sky more