Kim Zetter is an American investigative journalist and author who has covered cybersecurity and national security since 1999. She has broken numerous stories over the years about NSA surveillance, WikiLeaks, and the hacker underground, including an award-winning series about the security problems with electronic voting machines. She has three times been voted one of the top ten security journalists in the U.S. by her journalism peers and security professionals. She's considered one of the world's experts on Stuxnet, a virus/worm used to sabotage Iran's nuclear program, and published a book on the topic - Countdown to Zero Day: Stuxnet and the Launch of the World's First Digital Weapon.