Morkes, Andrew <br/><br/>
Professional hackers/ 
Andrew Morkes 
 - 96p.:  illustration;  24cm. 
<br/><br/><label>ISBN: </label>9781422243008 9781422242926 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Penetration testing ( computer security)--Juvenile literature<br/>Hacking--Vocational guidance--Juvenile literature<br/>Hacker--Juvenile literature