hackers are not just after your computer: connected devices from cars to home security system to sniper rifles are now targets for actor looking to steal or cause mischief the rapid growth in the "internet of things" has opened up new opportunities for cyber attacks and new markets for cyber defenders.This is among the hot topics at a Black Hat computer security conference that kicks off in Las Vegas on Sunday and an infamous Def Con hacker gathering that follows . Early glimpses have been provided of scheduled presentations about how to commandeer control of some Chrysler Fait vehicles or accurately retarget self-aiming sniper rifles. "The Internet of Thing is definotely one of the big new frontiers,"said Christopher Kruegel , co-founder of cyber security firm Lastline and a professor of computer science at a state univercity in Southern California