Ukraine invasion: Russia is a cyber power - does that mean a cyber war is coming?

Cyber is used to degrade public trust in state institutions and military, it's used to sow doubt," says James Sullivan, director of cyber research at the defence and security think tank RUSI. "Arguably that's been going on in Ukraine much longer than the moment of invasion. We've seen attacks on power grids, financial systems, media outlets, emergency services, the electoral commission, but in a low-level way, so there's always plausible deniability."