ITIS 1210 Introduction to Web-Based Information Systems Chapter 15 How Email Spam Works.
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ITIS 1210 ITIS 1210 Introduction to Web- Introduction to Web- Based Information Based Information Systems Systems Chapter 15 Chapter 15 How Email Spam Works How Email Spam Works
Transcript of ITIS 1210 Introduction to Web-Based Information Systems Chapter 15 How Email Spam Works.
ITIS 1210ITIS 1210Introduction to Web-Based Introduction to Web-Based
Information SystemsInformation Systems
Chapter 15Chapter 15How Email Spam WorksHow Email Spam Works
How Email Spam WorksHow Email Spam Works
What to do about spam?What to do about spam? Unsolicited junk mailUnsolicited junk mail ““Good” spamGood” spam
Buy their goods or servicesBuy their goods or services Visit their Web sitesVisit their Web sites
““Bad” spamBad” spam VirusesViruses PornPorn
How Email Spam WorksHow Email Spam Works
Where does “spam” come from?Where does “spam” come from? Monty Python's Flying Circus
Why is spam a problem?Why is spam a problem? Uses resourcesUses resources Slows down InternetSlows down Internet Takes up spaceTakes up space Takes time and effort to processTakes time and effort to process
How Email Spam WorksHow Email Spam Works
Sending address can be forgedSending address can be forged Angry responses go to wrong personAngry responses go to wrong person
Hard to filter if using real person’s email Hard to filter if using real person’s email address as sender’s addressaddress as sender’s address
Senders can use other servers to send Senders can use other servers to send spam – pushing the costs off on othersspam – pushing the costs off on others
How Email Spam WorksHow Email Spam Works
Spammers buy email listsSpammers buy email lists Private companiesPrivate companies
Send same message to tens of thousands Send same message to tens of thousands of recipients at the same timeof recipients at the same time
May relay messages from different servers May relay messages from different servers to hide their identify or real locationto hide their identify or real location
How Email Spam WorksHow Email Spam Works
Should you respond to spam by asking to Should you respond to spam by asking to be removed from the list?be removed from the list?
NO! It verifies that your email address is active!
