Russian crime group behind London hospitals cyber-attack, says expert

Ex-head of National Cyber Security Centre says group has two-year history of attacking organisations across the world'

A group of Russian cybercriminals is behind the ransomware attack that halted operations and tests in major London NHS hospitals, the former chief executive of the National Cyber Security Centre has said.

Ciaran Martin said the attack on the pathology services firm Synnovis had led to a severe reduction in capacity" and was a very, very serious incident".