[Dismas]

I hate to be that guy, but I'm almost 100% certain that this is Chinese technology at play. Nearly all cases reported have originated from Cuba. Cuba is also a communist country with good relations with China. And I can guarantee you that Cuba does not have the capabilities to develop anything that sophisticated.

Nonetheless, this is definitely scary technology. Hopefully the U.S. government can get to the bottom of this sooner rather than later, before this technology is used in a wide-spread scale.

Likely. It's also a possibility it is Russian.