Could the U.S. Have Stopped Russia’s Hack?

The United States is contending with a computer hack unprecedented in scope, and it could take months or even years to understand exactly what happened. But the hack has roots in vulnerabilities understood since the beginning of the internet, so why and how did this happen?  Guest: Fred Kaplan, Slate’s "War Stories" columnist  Slate Plus members get bonus segments and ad-free podcast feeds. Sign up now. Learn more about your ad choices. Visit megaphone.fm/adchoices