Technical director Ian Levy provides update following invasion of Ukraine
Ransomware became 'the most significant cyber threat facing the UK this year', NCSC states in its annual review
Lindy Cameron will tell the RUSI think tank that a 'coordinated response' is needed to combat 'increasingly professional' cybercriminals
Warning comes after research claims that more than four in 10 UK firms have suffered a cyberattack over the last year