Cybersecurity experts caution that attempting to attribute the attacks in a hurry is irresponsible. Attributing cyberattacks is incredibly difficult, often involves underlying motivations and does little, if anything, to help targeted organizations defend themselves. Some cybersecurity pundits have been quick to suggest that the Friday online attack against the opening ceremonies of the Olympic Winter Games in South Korea were most likely carried out by Russia. The attack disrupted the Pyeongchang 2018 website as well as WiFi in the stadium where the opening ceremony was held (see Hackers Win Olympic Gold Medal for Disruption)”]
Source: https://www.cuinfosecurity.com/blogs/attribution-games-dont-rush-to-blame-p-2594