https://wccftech.com/nintendo-switch-hack-security-breach-continues-140k-accounts/

Back in April a major Switch security breach came to light, with over 160,000 Nintendo Accounts being breached by hackers. Most, if not all, the unauthorized logins happened through the Nintendo Network ID system (you can also log in to a Nintendo Account via Twitter, Facebook, and Google). Nintendo claimed their own databases and servers had not been compromised, meaning the hackers logged in using passwords and information gained elsewhere. Following the hacking announcement, Nintendo shut off NNID logins temporarily and encouraged Switch users to set up two-step verification.

Well, unfortunately this story isn’t over – since initially reporting the hacking problem, Nintendo has discovered that an additional 140,000 accounts have been accessed.