I was about to post this, then I searched and it was already posted.<p>The author says the book was being illegally distributed by a CIA agent and then Wikileaks and that you can't trust their copies because it may include PDF zero days. But he is another security guy so, can we really trust his copy?<p>I just downloaded and started reading anyway :) I think it looks pretty fun. A nice complementary book besides Karim Yagmour's Embedded Android.<p>You can also buy the original one if you want to have info on Marshmallow and Nougat. Or you can wait until files of another intelligence agency is dumped on the internet :)