Grand Theft Auto Online, Rockstar just started resetting cash from modded or cheat accounts. Based from the message they posted from their support board, they explain to players, to keep the gameplay environment of Grand Theft Auto Online fair they have to removed illegitimately gained in-game money from players accounts.
For affected players, they will received the following message:
USER, Your GTA Online Cash Balance has Been Adjusted. We have determined that your account illegitematly gained in-game money via mods, cheats or other actions. We’ve adjusted your account and updated your balance.
No additional action is pending against your account. Note that accounts that illegitimately gain money in the future will be subject to action including the Cheater Pool, account reset or suspension of Online access.
For players who has account being adjusted and happen to purchased a Shark Card, money for this card still remain and not affected.