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They’re all weapons used by states against each other in a grey zone of harm that sits – deliberately – under the threshold of war, but could be just as dangerous if ignored.
Sky News journalist Deborah Haynes explores this often invisible battlefield, where anything can be – and is – used as a weapon and anyone, anywhere can be a target.
States, criminals and terrorists all use cyber to attack each other in the grey zone. It puts anyone with a computer in the firing line, but also means that anyone who understands computers has the ability to fight back.
This episode explores a range of cyber threats from espionage up to attacks that cause physical harm, such as by targeting hospitals or electricity supplies.
Haynes also speaks to a young computer expert called Marcus Hutchins who helped to stop one of the worst known cyber attacks to hit the UK.
The National Health Service was one of the main victims of the May 2017 WannaCry attack, blamed on North Korea. Pyongyang has denied involvement.
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