UK firms warned of Russian cyberwar ‘spillover’ from Ukraine

Meetings held on threat posed, particularly to critical infrastructure, and how it could be tackled

• Ukraine crisis: live updates

British officials are concerned about spillover" from any heightened Russian cyber-activity in Ukraine, as demonstrated by last week's attack on two banks by hackers linked to the GRU spy agency.

Although there have been no Ukraine-related Russian attacks on the UK since the start of the crisis, cyber-specialists have been holding meetings with key companies to discuss the possible threat and how it could be tackled.