1. 1 Network Security Management ─Mail Student ： A0933340 吳守宏

2. 2 Springboard Mail is an invasive springboard.  Fishing Program e-bay 、 yahoo  E-mail Horse 、 bad intension programs bank 、 sensitivity data  Worms Test Mail 、 backdoor  Advertised mail Yahoo vs. Google

3. 3 Spam Mail Send exact the same e-mail to lots of people without permitting. The contents of the mails almost are the commercial ads which is irrelevant to receiver.

4. 4 Effect The mail server is always overloading because of sending lots of mails in a short time. The receivers need to waste time and money to take these mails.

5. 5 Mail Got Search privately  Web site 、 forum 、 BBS Search publicly  Special communities commerce Search illegally  Invade mail server Perl  Regular Express

6. 6 Mail Send POP3 protocol  Yahoo 、 Google……Mail Server Perl  Mail :: Sendmail 、 Mail :: Bulkmail BBS  Group mail

7. 7 Mail Defense Enterprises drive anti-spam box  Google 、 Yahoo expensed box 、 U-mail Antivirus software  Kaspersky Intelligent spam filter  SimpleAct （ SpamX ）、 SV3000 Anti-Spam 、 Spam Trap Mail Server  Relay  Website to detect

8. 8 Mail Defense (con’t) Perl  Mail :: Audit 、 Mail :: SpamAssassin Brightmail  Probe Network Multilayer anti-spam mechanism Detect mail, analyze and beat Set up the rules and make out Resist the newest way to send spam

9. 9 The End