ISBN:

• 9781532115349
• 1532115342

Description: 32 pages : illustrations (chiefly colour) ; 21 cm.

Notes: Includes index.

LCCN: 2017961592

Control Number: 2597177

Series: It's a digital world!

Subjects:

• Hackers -- Juvenile literature.
• Penetration testing (Computer security) -- Juvenile literature.