An Unknown Hacker Group Claims That It Shut Down the World's Largest Oil Company--And That They'll Do It Again [Hacking]

An Unknown Hacker Group Claims That It Shut Down the World's Largest Oil Company--And That They'll Do It Again [Hacking]
http://gizmodo.com/5937424/an-unknown-hacker-group-claims-that-it-shut-down-the-worlds-largest-oil-company++and-that-theyll-do-it-again