A book explaining the basics of internet security. - Title: Internet Security - Authors: Yoji Kanzaki, Kenzo Nishimura - Publisher: Nikkei BP - ISBN: 978-4-89100-564-1 - Price: 1800 yen - Contents: Explanation of firewalls and related security, computer virus countermeasures, personal information filtering, and the mechanisms of online threats. Stored at home. I have not checked for any lines or writing, but please be aware that there might be some. Thank you for looking.