https://www.pcgamer.com/a-youtuber-has-broken-into-the-world-of-warcraft-classic-demo-a-week-early/

The demo for World of Warcraft: Classic is due to launch next week—but one YouTuber has managed to sneak into its version of Azeroth early by using an emulator.

The YouTuber, called Dodgy Kebaab, told Eurogamer that the demo client for the game had leaked on various Discord channels. Normally, it wouldn't be usable, but he was able to get into the game using a sandbox emulator, which stops it connecting to Blizzard's servers, instead connecting it to a program running on a PC.