Recently I've been playing Uplink (
http://www.introversion.co.uk/uplink/) and I just got struck by an idea. What if someone made a hacking mod for blockland (Upblock anyone?)
For example, you set a password and a hacking difficulty to a brick and when a player interacts with it, they are presented with a "Enter password" field. It could be displayed in the chat, or maybe a GUI screen. Then, they can either enter the password, or try and crack the password, bypass security, etc. You could edit various settings such as password strength, trace time, encryption, firewall, proxy, etc.
After the brick is hacked, an "onHacked" event could be used to display info, make a door open, etc. Maybe there could be an "onHackFail" event too!

What do you think?