Origin of Wireless Security: the Marconi Radio Hack of 1903
hackaday.com
hackaday.com
Marconi was a student and assistant of Tesla for a time and decided to steal his work and go into business for himself.
Unfortunately this is not widely understood and Marconi is still widely thought to have invented radio when in fact it was Tesla.
I doubt this very much. Can you give a reference please?
"Nikola Tesla: The Guy Who DIDN'T "Invent Radio"" http://earlyradiohistory.us/tesla.htm
If any one was first, it had to be David Edward Hughes.
https://en.wikipedia.org/wiki/David_Edward_Hughes
Luckily a lot of new material has surfaced recently, including his original notes and apparatus.