Question about external hacks

"External" means it doesn't inject into game? Or what? Is it detectable by vac2? (I think this is not, if it's injectless.)

Thx for answers.

External hacks acts outside of the game, But most of the time some of them still scans the game memory, Nothing is 100% Safe, But these are more than any other hack, But most of the time they don't have a lot of features.

Melodia