A man in a black hoodie wearing a Guy Fawkes mask sits in a dark room, face lit up forebodingly by his laptop screen. He types furiously, laying down dozens of lines of code. After a few moments go by ...

We tend to think using our PCs is the most harmless thing on the planet — that when we’re alone, it’s just ourselves and our thoughts for company. But the terrifying truth is that our PC’s webcam can ...