ctOS Breach (MM)

1: The first box is located on the rooftop of the middle-south apartment building. You can reach the rooftop by climbing on any of the planters near the balconies with ladders. Once you've hacked the first box, the other four boxes can be found on the other rooftop levels as well. The three can be hacked immediately without issues; there's only one box that's inside a ctOS protected gate. The switch console is found on the ground level; you can hack it remotely by using one of the cameras nearby.

2: Head to the marked location and find the first box in the middle of the fire escape stairs at the back of the building. After starting the mission, head to the nearest box and unlock it remotely by Hacking the camera from the building across the street. The second box is located in ground level, in the small alcove between the two buildings. Continue to the third box where you have to ride a construction lift and go around / destroy the fence surrounding it. Finally, the last box is located behind the building. You can hack it remotely by using the camera installed on the wall of the building you're in.

3: The reach the first box, you have to use the construction lift to reach the rooftop of the building where it is located. After Hacking the first box, find a vehicle and head to the nearest box located in the upper balcony of a tower. You can hack it remotely using the nearby camera. The next box is located in the ground level, as you enter a short alley. The next box is found inside a showroom and finally, the last box must be viewed by the camera underneath it to be hacked remotely.