Embed Size (px)
Citation preview
Roadmap
What is SPAM? Why Spamming? How to avoid SPAM? References
What is SPAM?
Spiced ham or luncheon meat?
http://media.hormel.com/images/refimages/museum%20press%20kit/spam%20hero%20web%20ready.jpgUnso
licited Emails.
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 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
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
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/
