April 2013: Counter-Strike's anti-cheat software secretly mined $BTC on 14,000 player GPUs for 2 weeks.

A rogue staff member slipped the miner in after an internal test got axed. Total haul: ~30 $BTC.

Players caught on when GPUs hit 90% usage while idle and cards started frying. Company got slapped with a $1M settlement in New Jersey and donated the mined coins + matching amount to charity.

Wild how early crypto mining ops played out before regulation caught up. GPU go brrr without consent = not the move.