Reconnaissance or Foot-printing covers almost ninety percent of hacking activity! Although it's passive, it's the key factor in any attack on a specific target.
Without knowing the finer nuances of reconnaissance you cannot make the next move. In most cases search engines are your best friends. For that there is a separate chapter on ‘Google Hacking’. The reconnaissance tool NMAP has been covered in the book in detail.
The design of this book stands as a gateway to the world of Ethical Hacking.
Sanjib Sinha is an Author, and Technologue Romantique.
He writes stories; as well as codes. His book "The Beginning Ethical Hacking with Python" (Apress) has been one of the most downloaded IT books in 2016-17 (Provided by Bookmetrix). Know his journey as a writer: http://sanjibsinha.com.
He loves to connect through his social media handle: @sanjibsinha.