The oldest information system the government operates might also be the most crucial one. No, not the IRS master file system. It's the technology that controls nuclear weapons. It dates to the 1950s. Yet imagine if the control systems were online in the age of ransomware. My next guest has thought about exactly that. A long time scholar and researcher in cybersecurity, he's written a book called Cyber Threats and Nuclear Weapons. Stanford University Fellow Herb Lin joined the Federal Drive.