How Diablo hackers uncovered a speedrun scandal
For years, Maciej "Groobo" Maselewskistood as the undisputed champion of Diablo speedrunning. His 3-minute, 12-second Sorcerer run looked all but unbeatable thanks to a combination of powerful (and allowable) glitch exploits along with what seemed like some unbelievable luck in the game's randomly generated dungeon.
But when a team of other speedrunners started trying and failing to replicate that luck using outside software and analysis tools, the story behind Groobo's run began to fall apart. As the inconsistencies in the run started to mount, that team would conduct an automated search through billions of legitimate Diablo dungeons to prove beyond a shadow of a doubt that Groobo's game couldn't have taken place in any of them.
"We just had a lot of curiosity and resentment that drove us to dig even deeper," team member Staphen told Ars Technica of their investigation. "Betrayal might be another way to describe it," team member AJenbo added. "To find out that this had been done illegitimately... and the person had both gotten and taken a lot of praise for their achievement."