I wouldn't worry to much about the communication paths of criminal elements. With cell phone scramblers, good encryption, and a variety of "criminal" languages the com path for organized crime is fairly stout. There is telemetry already on the power grid which is interesting from a few different perspectives.

As to the electrical grid, if in my first under graduate systems design program I designed a system that was based on five large wobbly systems, with centralized control, little redundancy, over lapping vulnerabilities, was life critical, had a design goal of MTBF of 99.99999 up time, and had control features outside of the actual (extra-territorial) control of the owning entity I'd have been given an "F" so big I'd be an art teacher (or anthropologist).