One of the first chances to get this trophy (maybe the first chance) is when you enter the Eternal Flame Crematorium. Pass through the little reception area and you will come to a large incinerator with a security camera behind it. If it sees you, you have a couple of seconds to hide or else it will send 2 hostile security bots looking for you and they will attack. Simply wait until it oscillates to either the left or right and go in the opposite direction and get under it and hit the Square button to hack. Play the mini-game or buyout for $10 and another easy trophy is yours.