2018 Master Sommelier exam cheating scandal
In early October 2018, the board of the Court of Master Sommeliers, Americas (CMSA) voted unanimously to suspend indefinitely the Master Sommelier credential awarded to all but one of an unprecedented 24 candidates who had passed its stringent annual membership exam a month previously at the Four Seasons Hotel St. Louis.
Source: Wikipedia — 2018 Master Sommelier exam cheating scandal (CC BY-SA 4.0)