Harper, Allen, <br/><br/>
Gray hat hacking :  the ethical hacker's handbook. 

 - 6th edition.  Allen Harper [and six others]. 
 - 1 volume :  illustrations (black and white) 
<br/><br/> Previous edition: 2018. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781264268948 (pbk.) :  £45.99 
<br/><br/><label>Nat. Bib. No.: </label>GBC234894  bnb 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>020500844  Uk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer security.<br/>Hackers.
<br/><br/><label>Dewey Class. No.: </label>005.8