The massive SolarWinds hack: What happened, and what it means for U.S. cyber security

We still don't know the full scale of the damage of that massive SolarWinds hack that breached thousands of systems, including U.S. government agencies and Fortune 500 companies. So what do we know? Dr. Jason Thatcher, Milton F. Stauffer Professor of Management Information Systems at Temple University's Fox School of Business joins KYW Newsradio in Depth to break down what we know right now, how such a huge hack even happened in the first place, and what it means for the very real cyber battlefield that's all around us and only ramping up in scale and intensity.