In both government and business, stories of disgruntled IT personnel who have wreaked havoc are legion. They include the system administrator who locked everyone else out of San Francisco’s central computer system, the Australian who made a computerized waste-management system spill millions of liters of raw sewage into parks and rivers, the car-dealership worker who remotely shut down the cars of over 100 furious customers, and the guy who hacked into his ex-boss’s computer while he was giving a presentation to the city mayor and put a naked woman on the screen instead.

Source. Via Snippets of random.