![WannaCry encrypts your files and demands payment to regain access [Richie Tongo/EPA]](/wp-content/uploads/2017/05/4470d42198bc45f687867d45b11f796c_18.jpeg?resize=270%2C180)
What you need to know about ‘WannaCry’, the malicious software behind Friday’s worldwide hacking attack.
From: Inside Story
Who is to blame for the massive ransomware attack?
A virus demands money from Windows users in 99 countries as banks, hospitals and well-known companies are affected.
13 May 2017
Related
International investigation needed to identify culprits of biggest-of-its-kind cyber-extortion attack, Europol says.
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