Nintendo leak traced to Google employee viewing private YouTube video
What specific incident involving a Google contractor and Nintendo's private YouTube videos was detailed in the recent report on Google's past security issues?

The specific incident detailed in the recent report on Google's past security issues involved a Google contractor accessing private videos stored on Nintendo's YouTube account. The contractor then shared the information with a friend, who posted it on Reddit before the game company's official announcement. The incident occurred in 2017 and involved the then-untitled Nintendo Switch game Yoshi's Crafted World. Google reportedly reviewed the incident at that time and concluded after an internal interview that the action was "non-intentional."
What conclusion did Google reach regarding the contractor's action after reviewing the incident?

After reviewing the incident involving a Google contractor who accessed private videos from Nintendo's YouTube channel and leaked information about the then-untitled Nintendo Switch game Yoshi's Crafted World, Google concluded that the contractor's action was "non-intentional."
How did the Google contractor manage to leak Nintendo's information, and what platform was used to spread it?

The Google contractor managed to leak Nintendo's information by accessing private videos stored on Nintendo's YouTube account. The contractor then shared the information with a friend, who posted it on Reddit. The leaked information was related to the then-untitled Nintendo Switch game Yoshi's Crafted World.