Looking forward to watching the Olympic Games in Tokyo? Here's a reminder of what happened at the opening ceremony of the 2018 Winter Olympics in Pyeongchang
Barely noticed by the public, but an elaborate hacking attack hit the stadium, starting a cyber-political puzzle.
A cyber winter
It is February 9, 2018. The stage is set for the Pyeongchang Winter Olympics' opening ceremony. But the organizers didn't realize one of the most deceptive cyberattacks in history was afoot.
This three-part series looks at the background to the Pyeongchang cyberattack, the Olympics IT team's stunning response and why it was so hard (and so risky) to find out who did it.