Basic hacking questions Options

[cartoonlad]

Getting ready for the next game in which some hacking might take place, I'm trying to run through a few scenarios and am unclear about what actually happens in some basic tasks. Jump in any time to point out where I'm going wrong.

We're breaking into a building and want to deactivate the alarm systems while making it look like the alarm system is still on, then want to take over two security cameras in the building, making them display empty hallways.

So the first thing the hacker does is hack on the fly into the building's wireless security node, trying to get in with security access. Assuming he gets in without being detected, the first thing he does is access the alarm system. He doesn't have to hack into this as it's connected to or part of the building's security node.

Once there, he takes control of the alarm system. This is a Hacking + Command (Firewall, 1 IP) test.

Now in control, he edits the feed going out of the system with a Computer + Edit (Firewall, 1 IP) test to determine how long it will take him to edit the feed. Because he's in with security clearance, the only way for the system to determine that it's being hacked is if there's a glitch.

He's done, so he's back in the security system. He accesses camera one, doing the same with the alarm system: Hack + Command, Computer + Edit. Then to camera two. Both times not needing to hack into the cameras as they're attached or part of the overall security network.

Assuming there's no patrolling IC or security hackers, is that pretty much it? Would the security network and alarm system be two separate nodes? Anything completely, totally wrong with the above?