That's why it's possible for Jade to break into all of the Alph Sections' buildings. A member of the IRIS Network (or at least, someone who was against the Alpha Sections) was the one who designed all of the Alpha Section's stuff. They had to do it in a sneaky way, so that the Alpha Aections wouldn't suspect anything, but if you think about it, there was ALWAYS a trick to get past a guarded room. The robots can disable an electric barrier, there are crates everywhere, and holes in the walls for you to hide behind, the "level 5 death rays" only shot you if a guard activates it, etc, etc.