Imagine a country paralyzed by the inability — even for just one day — to move people or goods by rail or by plane. This is not science fiction. This is the reality of the potential cybersecurity threats that could impact the transportation sector and its critical infrastructure. As companies continue to take a hard look at their own cybersecurity readiness, the United States (U.S.) Transportation Security Administration (TSA) is turning its focus to the rail and aviation sectors to make sure they're up to the task. "Cybersecurity" used to be a buzzword uttered mostly by IT professionals, computer geeks, and hackers. In the wake of the past decade's mega-breaches — including the now-infamous 2013 Target data breach through which criminals stole over 100 million customers' financial data, the Yahoo! data breaches that compromised a billion or more user accounts, the Marriott/Starwood cyberattack that exposed up to 500 million guests' information, and similar incidents — seemingly everyone now knows about the need to protect passwords, ward off software intrusions, and keep networks and systems safe from all kinds of potential threats.