NSA able to target offline computers using radio-waves for surveillance, cyber-attacks

RT.com - The National Security Agency has implanted software in about 100,000 computers around the world, allowing the United States to surveil those machines while creating a trail that can be used to launch cyber-attacks.

Though most of the software is installed by gaining access to computer networks, the NSA can also employ technology that enters computers and alters data without needing internet access.  Read more.