I'm pretty sure I read of a method that works even with air gap https://www.schneier.com/blog/archives/2013/10/air_gaps.html https://www.schneier.com/blog/archi

I'm pretty sure I read of a method that works even with air gap https://www.schneier.com/blog/archives/2013/10/air_gaps.html https://www.schneier.com/blog/archives/2013/10/air_gaps.html