1: The security router is found in the side of the building. There's an easy firewall layout that you need to break through.
2: The security router is found on the side of the building, near the underpass entrance. It is unpowered so trace the signal leading to the first switch console found in a small parking lot in the underpass. Trace the activated signal to find the second switch console along the sidewalk leading to the underpass.
3: The security router is found in the underpass of the John Hancock Center. You can just hack it immediately since there are no switch consoles enabled.
Trace the signal to the balcony of the building to the south. Use one of the cameras on the adjacent building to see the console and hack it remotely. Follow the activated line to the second switch console near an ATM. Unlocking this should allow you to hack the security router.
5: This router doesn't have any switch consoles to be activated so just head over to the location and use the forklift to get to the same level where the router is located. After Hacking it, you just need to break through a simple firewall.
6: This router doesn't have any switch consoles to be activated so just head over to the location and find it in the open, by the stairs of the building.
7: First, you have to find the last switch console. It is located outside the office space to the south, behind the building's logo. Next, trace the activated line as it leads you to a balcony above ground. You have to hack the nearby camera in the corner to view the console and unlock it. Finally, you're free to hack the security router.
8: This router doesn't have any switch consoles to be activated so just head over to the location and find within the building's courtyard. Break through the firewall to get in.