May 22, 2017

Windows 7 hardest hit by WannaCry worm

The majority of machines hit by the WannaCry ransomware worm in the cyber-attack earlier this month were running Windows 7, security firms suggest. Spanish telecoms firm Telefonica, French carmaker Renault, German rail firm Deutsche Bahn, logistics firm Fedex, Russia's interior ministry and 61 NHS organisations were all caught out by WannaCry. The WannaCry worm demanded a payment of £230 in bitcoins before they were unfrozen. Adam McNeil, a senior malware analyst at Malwarebytes, said the worm was primed to look for machines vulnerable to a bug in a Microsoft technology known as the Server Message Block. Mr McNeil said he suspected that whoever was behind the worm first identifed a "Few thousand" vulnerable machines which were used as the launch platform for the much larger waves of infection.

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