https://motherboard.vice.com/en_us/article/7x339d/gta-online-hack-let-trolls-kill-gamers-in-single-player-mode

Grand Theft Auto: Online, like more or less all multiplayer games, fights to stop cheaters who ruin the experience for other players. Unlike a lot of other multiplayer games, GTA: Online consistently loses that battle. Despite shutting down modders, taking cheat makers to court, and even securing court orders to search cheat makers' homes, GTA: Online remains a "cheater's paradise."

For about 48 hours this week, the cheater's paradise seemed to turn into outright hell for everyone else when game update 1.45 (which consisted entirely of "General fixes for stability and security") unintentionally allowed cheaters to harass other people, even when those players were in single-player modes. Until the exploit was supposedly patched early this morning, it was a vision of a dystopian future where mischievous cheaters could harass you anywhere, even if you avoid online multiplayer games.