GHOST 1.0

Pretty easy, it just passes by unnoticed. To avoid spoilers, later in the game you'll have to hack a female robot that keeps saying "Please wait. I'll attend you in a moment". That's her "voice routine" so hack FAST into her then you'll have two options: "Voice routine" or "Touch the computer". Just use the voice routine three times (instead of me who used the routine just once then had to do the whole game again) then the achievement is yours.