Re: Italian Job
> It would be far, far, far, far more dangerous, for example, to have traffic lights that can accept remote commands to make them green. And I bet you we already have that too.
No, we most certainly do not.
Traffic controllers have a secondary monitoring chip (usually m68k micro, sometimes a GAL chip) that is programmable only locally. It has independent voltage sensors to detect if conflicting 'phases' (ie approaches to a junction) are green simultaneously, and will cut the power immediately if violated.
The main controller does not usually have direct network access either, it only sees a pattern of 16 bits with dedicated functions, for synchronising traffic lights across an urban network. And a bit can only 'request' a state transition, the controller will never violate min/max timings between lights.
I worked on these as my first job out of uni.
Also, I think it's pretty unlikely that someone could set up a radio transmitter big enough to drown out Droitwich, without being noticed pretty damn quick by the MoD..
As for "hacking" Droitwich, it's pretty low tech and i'd have thought fairly high security. Crapita would be a far easier target IMO