In recent years, "Grand Theft Auto Online" has experienced a drastic increase in griefing due in part to the emergence of bugs and better money-making opportunities. Common griefing techniques within the game abuse passive mode and trivially accessible weaponized vehicles. Developer Rockstar has implemented measures such as a longer cool-down on passive mode, patching invincibility glitches, and removing passive mode from weaponized vehicles in recent updates. In addition, the game also features a reputation system that, in effect, after excessive "bad sport point" accumulation, will mark players as "bad sports", allowing them to only play in lobbies with other "bad sports". Such points are either accumulated over time or gained within a certain time frame and are acquired by actions such as destroying another player's personal vehicle, or quitting jobs early. This is one of the more controversial features of the game, as some point out flaws such as the game not considering if destruction of a vehicle was self-defense.