Reviewer: “This is definitely not recommended as an entry level book, but it is an excellent resource for penetration testers and those thinking of commissioning pen tests on their systems” Author: “When they put “unconventional” in the title, the authors weren’t exaggerating. The book also benefits from a Ninjutsu consultant, Bryan R. Garner, and a technical editor, Joshua Abraham.” “With the good blend of historical techniques and its modern day application there is something in here for everyone””]
Source: https://www.amazon.co.uk/exec/obidos/ASIN/1597495883/helpnetsecuri-20