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SPAM

SPAM. WeeSan Lee weesan@cs.ucr.edu. Roadmap. What is SPAM? Why Spamming? How to avoid SPAM? References. What is SPAM?. S piced ham or luncheon meat?. Unsolicited Emails. http://media.hormel.com/images/refimages/museum%20press%20kit/spam%20hero%20web%20ready.jpg. Why Spamming?. Cheap

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SPAM

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  1. SPAM WeeSan Lee weesan@cs.ucr.edu

  2. Roadmap • What is SPAM? • Why Spamming? • How to avoid SPAM? • References

  3. What is SPAM? • Spiced ham or luncheon meat? Unsolicited Emails. http://media.hormel.com/images/refimages/museum%20press%20kit/spam%20hero%20web%20ready.jpg

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

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

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

  7. References • Internet Effectively • Ch 1 • Ch 4 • The Apache SpamAssassin Project • http://spamassassin.apache.org/ • UCR SMTP Authentication • http://www.cnc.ucr.edu/antispam/index2.php?content=authentication/index.html • UCR Anti-Spam • http://www.cnc.ucr.edu/antispam/

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