On the CNN program CyberAttack broadcast in 2010, the show revealed threats from hacking and terrorism to the smart grid. These concerns are also documented by the Department of Homeland Security and the National Security Agency.  Former CIA Director James Woolsey accounted the wireless security threat at http://www.metacafe.com/watch/4260978/jim_woolsey_grid_security_is_afterthought/

As of May 2012, US government agencies are authorized to operate drones for surveillance. Any wireless communications, including smart meters, are vulnerable to monitoring by drones.   Moreover, in the fall of 2015, privately operated drones will be authorized by the United States government to operate.