Security researchers do it because they love it. Working into the wee hours of the morning, often accompanied by cans of Red Bull and cold pizza, security researchers are the driving force behind the security products created to detect attacks and defend IT infrastructure from malicious threats. Equipped with drive and innovation, as well as an innate desire to break into things, they tackle what seems to be the insurmountable challenge of exposing vulnerabilities and squelching elusive and highly sophisticated security threats, such as botnets, Internet worms and Trojan horses. They then risk both public persecution and untold glory in an effort to warn users about vulnerabilities on the devices and applications that many take for granted. Here are a few of the best and brightest.