• new UK and US intelligence suggests Russia was behind an operation targeting commercial communications company Viasat in Ukraine • incident on 24 February caused outages for several thousand Ukrainian customers , and impacted windfarms and internet users in central Europe • cyber security leaders from the 5 Eyes , EU and other international allies meet at the NCSC ’s Cyber UK conference in Newport today to discuss shared threats Russia has been behind a series of cyber - attacks since the start of the renewed invasion of Ukraine , the EU , UK , US and other allies have announced today ( 10 May ) .