SPAM WeeSan Lee

Roadmap What is SPAM? Why Spamming? How to avoid SPAM? References

What is SPAM? Spiced ham or luncheon meat? Unsolicited s.

Why Spamming? Cheap  Senders cost almost nothing Effective  0.001% of 1 million = 10 respondents A very tough battle for end users!

How to avoid SPAM? Use a SPAM blocker or anti-spam software Spam tagging  Unsolicited Commercial (UCE) X-Junkmail: UCE  SpamAssassin X-Spam-Flag: YES SMTP Authentication  Need to provide username and password before sending s Stop publishing your address online

How to reduce false positive? False positive  Good s get classified as SPAM UCR webmail  Set UCE score a little higher (HW4) Other webmails  Add known addresses to address book

References Internet Effectively  Ch 1  Ch 4 The Apache SpamAssassin Project  UCR SMTP Authentication  entication/index.html entication/index.html UCR Anti-Spam 