Hackers can obtain your password from the black market as easily as they can walk down the street and buy a bag of potato chips. Or they can dig in and find it themselves, if they’re even half smart. There’s no doubt that the once impregnable password is no longer much of a watchdog against thieves who want to steal your personal information. And firewalls are pretty much burnt down. An new technology company called UnifyID, out of San Francisco, thinks it knows how to once again safeguard your cyber…