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Massive ransomware infection hits computers in 99 countries

The ransomware has been identified as WannaCry - here shown in a safe environment on a security researcher's computer

A massive cyber-attack using tools believed to have been stolen from the US National Security Agency (NSA) has struck organizations around the world.

Cyber-security firm Avast said it had seen 75,000 cases of the ransomware - known as WannaCry and variants of that name - around the world.

There are reports of infections in 99 countries, including Russia and China.

Among the worst hit was the National Health Service (NHS) in England and Scotland.

The BBC understands about 40 NHS organizations and some medical practices were hit, with operations and appointments canceled.

Details By

http://www.bbc.com/news/technology-39901382