A huge cyber attack leveraging hacking tools widely believed to have been developed by the US National Security Agency brought disruption to Britain's health system on Friday and infected dozens of other countries around the world, security researchers said.
Hospitals and doctors' surgeries in parts of England were forced to turn away patients and cancel appointments after they were infected with the "ransomware", which scrambled data on computers and demanded payments of $300 to $600 to restore access. People in affected areas were being advised to seek medical care only in emergencies.
"We are experiencing a major IT disruption and there are delays at all of our hospitals," said the Barts Health group, which manages major London hospitals. Routine appointments had been cancelled and ambulances were being diverted to neighbouring hospitals.
Telecommunications giant Telefonica was among many targets in Spain, though it said the attack was limited to some computers on an internal network and had not affected clients or services.
Ransomware is malicious software that infects machines, locks them by encrypting data and then extorts money to let users back in. A Telefonica spokesman said a window appeared on screens of infected computers that demanded payment with the digital currency bitcoin in order to regain access to files.
Rich Barger, director of threat research at U.S.-based security research company Splunk, said: "This is one of the largest global ransomware attacks the cyber community has ever seen."
SOURCE: http://www.telegraph.co.uk/news/2017/05/12/nhs-hit-major-cyber-attack-hackers-demanding-ransom/
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