Wireless communication... an introduction.
Computer programming... the essense of hacking.

"Murder is wrong, unless done in great numbers and to the sound of trumpets."
Hacking is not bad or good. It is standard operating procedure so long as you take orders from your government when you do so. Releasing my tutorials is my modest way of assisting anyone wanting to learn about computers -- programming, architecture, and security. I do not care what you do with this knowledge, but I hope that you are ethical. And I hope that your ethic breaks free from the utilitarianism so often displayed by our world governments.