The Counter-Strike coaching bug scandal was a bug abuse scandal in the game Counter-Strike: Global Offensive. The bug had multiple variants, all of which allowed team coaches to see parts of the map they normally would not have access to and gather information about the enemy team.
It was first made public on 26 August 2020 by Wisła Kraków coach Mariusz "Loord" Cybulski. Five days later, three coaches were banned by Esports Integrity Commission (ESIC) for exploiting the bug. ESIC launched an investigation on 4 September and on 28 September, ESIC banned a further 34 coaches after reviewing 20% of the demos. On 5 May 2022, ESIC announced that almost 100 coaches were going to be sanctioned as they neared the completion of the final investigation.
Valve Corporation, the developer of the game, announced on 26 August 2020 that they had fixed the bug.