Russia is ready to carry out cyber attacks on the United Kingdom and other allies in a bid to weaken support for Ukraine, a senior minister will warn later.

Chancellor of the Duchy of Lancaster Pat McFadden, whose role includes responsibility for national security, is set to tell a Nato meeting that the Kremlin could target British businesses and leave millions without power. It is the latest in a series of warnings about the cyber-warfare capabilities of Russia, which McFadden is to call a “hidden war” being waged against Ukraine.

He is also expected to single-out Russia’s Unit 29155, which the government says has carried out a number of attacks in the UK and Europe.

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