https://www.techradar.com/news/nintendo-switch-online-hacked

Nintendo Switch Online, Nintendo’s new online gameplay service for its popular console, had its complimentary app containing a selection of classic NES games hacked in less than 24 hours after launch, Kotaku reports.

Hackers who have been successful in cracking open the emulator behind this Nintendo Switch app have cited how similar the emulator is to the one found on NES Classic Mini console. This appears to have been a huge factor in just how simple it was for hackers to get their way inside and start loading in their own games.