GURPS 4th Clarification for Pyramid #3/21: Cyberpunk and Building Organisations

[theshadow]

So I'm planning a cyberpunk game and I've been using Pyramid #3/21 as a resource but one thing has be baffling me, I understand how all the software works and how a net run works but I'm at a loss for figuring out what complexity level the target network should have.

For a TL9 hacker for example, how do I know what assets the target organisation has and can afford to put into their system so that it's realistic enough but also a challenge and not impossible?

The second part falls right into the first, I have several organisations (Governments, Corporations, Gangs, and Religious Groups) how can I assign what their assets are worth?

The resources I'm using are Basic Set, Action: Heroes, Action 2: Exploits, Ultra-Tech, and Pyramid #3/21: Cyberpunk and I can't seem to find an answer in them.

Can anyone give me a hand?