WannaCry malicious software has hit Britain’s National Health Service, some of Spain’s largest companies including Telefónica, as well as computers across Russia, the Ukraine and Taiwan, leading to PCs and data being locked up and held for ransom. The ransomware uses a vulnerability first revealed to the public as part of a leaked stash of NSA-related documents in order to infect Windows PCs and encrypt their contents, before demanding payments of hundreds of dollars for the key to decrypt files. The co-ordinated attack had managed to infect large numbers of computers across the health service less than six hours after it was first noticed by security researchers, in part due to its ability to spread within networks from PC to PC The ransomware has already caused hospitals across England to divert emergency patients – but what is it, how does it spread and why is this happening in the first place? What is ransomware? Ransomware is a particularly nasty type of malware that blocks access to a computer or its data and demands money to release it. How does it work? When a computer is infected, the ransomware typically contacts a central server for the information it needs to activate,… Read full this story
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What is WannaCry ransomware and why is it attacking global computers? have 245 words, post on www.theguardian.com at May 12, 2017. This is cached page on Konitono. If you want remove this page, please contact us.