The Goldberg Emulator is an open-source Steam emulator that does not inject into the real Steam client. Instead, it pretends to be Steam for the game .exe. Because it does not touch your running Steam process, your account remains safe. It cannot unlock online DLC, but for single-player content, it is superior.
Greenluma does not hack the game executable; it hacks the Steam client. greenluma dll injector verified
The only "verification" the scene respects comes from trusted members of the CS.RIN.RU forum (the largest Steam piracy community). A "verified" GreenLuma injector usually means: The Goldberg Emulator is an open-source Steam emulator