spam weesan lee [email protected]@cs.ucr.edu
TRANSCRIPT
![Page 2: SPAM WeeSan Lee weesan@cs.ucr.eduweesan@cs.ucr.edu](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d6e5503460f94a4eecd/html5/thumbnails/2.jpg)
Roadmap
What is SPAM? Why Spamming? How to avoid SPAM? References
![Page 3: SPAM WeeSan Lee weesan@cs.ucr.eduweesan@cs.ucr.edu](https://reader035.vdocuments.us/reader035/viewer/2022072008/56649d6e5503460f94a4eecd/html5/thumbnails/3.jpg)
What is SPAM?
Spiced ham or luncheon meat?
http://media.hormel.com/images/refimages/museum%20press%20kit/spam%20hero%20web%20ready.jpgUnso
licited Emails.
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Why Spamming?
Cheap Senders cost almost nothing
Effective 0.001% of 1 million = 10 respondents
A very tough battle for end users!
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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
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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
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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=auth
entication/index.html UCR Anti-Spam
http://www.cnc.ucr.edu/antispam/