Absolute Poker/Ultimate Bet
It used to be considered a poker myth that some players could see other players’ hold cards at the table. Nobody within the poker community would take claims of cheating seriously, but in the end it was the community that was responsible for exposing the scandal at UB/AP.
It’s really a story that could fill an entire website, but here is the watered down version of what happened.
A player was seen winning a lot of money and playing very suspiciously. This prompted people from the poker community to start examining his hand histories, some of which were mistakenly handed over by a lower-level employee at the poker site.