“A cyber-attack that hit organisations worldwide including the UK’s National Health Service was ‘unprecedented’, Europe’s police agency says.
Europol also warned a ‘complex international investigation’ was required ‘to identify the culprits’.
Ransomware encrypted data on at least 75,000 computers in 99 countries on Friday. Payments were demanded for access to be restored.”
Source: Cyber-attack: Europol says it was unprecedented in scale – BBC News