“Sunday Morning” Full Episode 1/3

Hosted by Jane Pauley. In our cover story, Ted Koppel looks at the cybersecurity threats posed by the alleged Russian hack of SolarWinds. Plus: Anthony Mason talks with Barry Gibb about his latest album featuring many of Nashville's biggest stars; Gayle King sits down with comedian Chris Rock; neurosurgeon Dr. Sanjay Gupta discusses his latest book, "Keep Sharp: Build a Better Brain at Any Age," with Dr. Jon LaPook; Major Garrett and Mark Phillips look ahead to 2021, in Washington and around the world; and CBS News veteran Bob Schieffer takes his artist's brush to a year like no other.