The virus is believed to have first taken hold on Tuesday in Ukraine where it silently infected computers after users downloaded a popular tax accounting package or visited a local news site, national police and international cyber experts said, according ...

He told the BBC the act was “unprecedented in its scale” and warned more people could find themselves affected on Monday morning. The virus took control of users’ files, demanding payments; Russia and the UK were among the worst-hit countries. ...

Computers in thousands of locations have been locked by a programme that demands $300 (£230) in Bitcoin, Joinfo.com reports with reference to the BBC. In April hackers known as The Shadow Brokers claimed to have stolen the tools and released ...