How hackers can switch on your webcam and control your computer

The 14-year-old couldn’t believe his eyes. The virtual currency he’d worked so hard to amass in the online role-playing game Runescape had vanished. He’d lost the equivalent of $700 in the blink of an eye, after investing his pocket money into the game’s economy for months. All that remained was an instant message dialogue box: “Haha, you got RATted!”