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Cyber attacks that hit 12 countries across Europe and Asia Friday, impacting the public health system in Britain, apparently involved a leaked hacking tool from the National Security Agency.

 

The attack used ransomware, which is malware that encrypts data and locks a user from their data until they pay a ransom. The tool, which was leaked by a group known as Shadow Brokers, had been stolen from the N.S.A. as part of a wide swath of tools illegally released in 2016.

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Microsoft said that they had rolled out a patch to fix the issue, but certain targets, including the hospitals in Britain, had not yet updated their systems.

The malware was sent via email with a file attached to it. From there, it subsequently spread.

Tom Donnelly, a spokesman for N.H.S. Digital, said the attack was still “ongoing” and that that the organization was “made aware of it this afternoon,” according to an interview in The New York Times.

The impact of the attacks caused phone lines to go down, appointments to be canceled and patients to be turned away, but there has been no reported evidence of patient data being breached.

There were a number of pictures posted to social media highlighting the ransomware, which asked for $300 in Bitcoin.

NHS Digital, which oversees cybersecurity in Britain, said the attack did not specifically target the NHS and “is affecting organizations from across a range of sectors.” In total, 16 NHS organizations said they were affected.

In addition, several Spanish companies had also been affected via a ransomware attack. Spain did not say which companies were affected, but Telefonica, a telecom giant said it had detected an incident which affected some of its employees.

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Hospital operator NHS Merseyside tweeted “following a suspected national cyberattack, we are taking all precautionary measures possible to protect our local NHS systems and services.”

Bart’s Health, which also operates a number of London-based hospitals, activated its major incident plan, which included canceling routine appointments and diverting ambulances to different hospitals.

 



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