Over time, especially since the release of the PC version, various technical terms for unorthodox gameplay occurrences have popped up in GTA V which might be hard for some players to wrap their heads around.
The most frequent three are Glitches, Hacks and Mods. The latter two require some sort of external files or programs to occur, while the first is entirely internal. Mods are fan made content packs that add to the single player mode of GTA V and are perfectly okay to use as long as you disable them when going Online.
Hacks are basically mods used Online in order to gain an unfair advantage. Whether they're mod menus, trainers or any kind of regular mod left active while in multiplayer, they count as hacks and will bring down the fiery wrath of Rockstar upon you — and rightfully so. Luckily, the recent upgrade that the anti-hack systems of GTA Online received have mostly cleaned out the streets on PC.
Finally, you have the glitches. These are inherently found within the code of the game. Whether they are programming errors or simply functions that somehow clash, the only thing that differentiates them from bugs is that they are in some way beneficial to the players.
Since glitches are technically part of the game, they are somewhat of a grey area. Some players are vehemently against them, others think they are OK — because "they're in the game". Just know that Rockstar still might roll back your unfair gains, changes, or worse. Our view on them is generally, if they are harmless, we're OK reporting them to our readers.
