Marcus Hutchins pleads not guilty to creating and selling Kronos malware

British cybersecurity researcher who stopped WannaCry attack is denying that he created and sold malware designed to steal people's online banking details

The British cybersecurity researcher Marcus Hutchins has pleaded "not guilty" to charges of creating and selling malware designed to steal people's online banking details.

Hutchins, 23, achieved fame as the "accidental hero" who helped to halt the spread of the WannaCry ransomware attack that crippled the UK's National Health Service and many other companies around the world.