China's military is developing electromagnetic pulse weapons that Beijing plans to use against U.S.

[PrepperJohn]

Another aspect to this threat is that of cyber-terrorism. I read on Twitter (via prepperzone.net) that the DHS considers this to be one of the greatest threats the U.S. is facing. Imagine what would happen to our great country if one of these individuals were to compromise our electric grid? The population would be throw into chaos immediately.

 

[Gazrok]

It is certainly our biggest vulnerability. It's raised every few years, and always shot down due to the cost of hardening the grid.