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Cel1

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Transcript

  • 1. CEL1: Electronic Mail and Dangers of the Internet
  • 2. Objectives
    • Understand how electronic mail works
    • Use proper netiquette for e-mail
    • Know the dangers of the Internet
    • Know how to be safe on the Internet
  • 3. 1.1 Sending E-mail
    • E-mail
      • Stands for Electronic Mail
      • A message that is sent using electronic communication systems
  • 4. 1.1 Sending E-mail
    • Sending e-mail is easy
  • 5. 1.1 Sending E-mail
    • An e-mail client is a program used to read and send e-mails
  • 6. 1.1 Sending E-mail
    • E-mail services can also be accessed with a web browser
  • 7. 1.1 Sending E-mail
    • An e-mail account is an e-mail address belonging to you
  • 8. 1.2 How E-mail Works
  • 9. 1.1 Sending E-mail
    • Components of an e-mail message
  • 10. 1.3 E-mail Netiquette
    • Good e-mail netiquette
      • Read your message before sending
      • When replying, it may be useful to quote from the original messages
      • Avoid using a language style that others do not understand
      • Obey the e-mail policy of your school
      • Make sure that the content is relevant to the recipient
      • Be polite
  • 11.
    • Good e-mail netiquette (Cont’d)
      • Have a relevant “Subject” line
      • Be patient, especially with inexperienced e-mail users
      • Sign off with your name at the end of your e-mail message
      • Do not include unnecessary or trivial content
      • Use emphasis (bold, italics) where it is useful
    1.3 E-mail Netiquette
  • 12. 1.3 E-mail Netiquette
    • Bad e-mail netiquette
      • Reply to an e-mail message when you are angry
      • Type in CAPITALS
        • This is considered SHOUTING
        • It is rude
      • Send irrelevant messages
      • Argue with others
      • Provoke people by sending them abusive e-mail messages
  • 13. 1.3 E-mail Netiquette
    • Bad e-mail netiquette (Cont’d)
      • Make personal remarks about other people
      • Mark messages as urgent when they are not
      • Post a friend’s e-mail address on websites
        • This will attract spam
  • 14. 1.3 E-mail Netiquette
  • 15. 1.4 Dangers of the Internet
    • Spamming
      • Unsolicited e-mails
      • Whether dangerous or not depends on its contents
      • Can be dangerous if you trust what it says without verifying the reliability of its source
  • 16. 1.4 Dangers of the Internet
    • Identity theft
      • Wrongfully obtains another person’s personal data
      • Uses that identity in some way involving fraud and deception
      • Phishing
        • Fishing for information using deception
        • Bank account number, credit card number, password
  • 17. 1.4 Dangers of the Internet
    • E-mail scams
      • A scheme or plan to cheat people of money
      • Plays on the greed of the victims
  • 18. 1.5 How to be Safe on the Internet
    • If it sounds too good to be true, it is probably not true
      • Someone might be trying to cheat you
  • 19. 1.5 How to be Safe on the Internet
    • If it sounds too good to be true, it is probably not true
      • Someone might be trying to cheat you
  • 20. 1.5 How to be Safe on the Internet
    • If it sounds too good to be true, it is probably not true
      • Someone might be trying to cheat you
  • 21. 1.5 How to be Safe on the Internet
    • If it sounds too good to be true, it is probably not true
      • Someone might be trying to cheat you
  • 22. 1.5 How to be Safe on the Internet
    • Have a personal and non-personal e-mail address
      • Personal e-mail address
        • Do not circulate this e-mail address widely
      • Non-personal e-mail address
        • For non-important matters
          • Registering yourself on websites
          • Sending e-mails to friends whom you are not so close to
      • If the non-personal e-mail account is compromised, create another one
  • 23. 1.5 How to be Safe on the Internet
    • If you’re not sure whether it is true, assume that it is FALSE
      • Do not be too trusting
        • Behind a computer, anyone can claim anything and pass off as anybody
  • 24. 1.5 How to be Safe on the Internet
    • Be extra careful with personal details
      • Do not give your personal details to people or websites that you cannot trust
      • Restrict the information that you give others
      • To avoid having your identity “stolen”
  • 25. 1.5 How to be Safe on the Internet
    • Be extra careful with personal details
  • 26. 1.5 How to be Safe on the Internet
    • Keep your OS and software updated
      • Software usually has security “holes” that allow hackers
      • Keep your OS and software updated with security patches that plug the “holes”
        • First step to keeping your computers more secure
        • There are other security measures
  • 27.
    • Be polite, be patient etc.
    • Online banking, web-based e-mail etc.
    • See “1.5 How to be Safe on the Internet”, pages 35 to 37
  • 28.
    • An e-mail is a message that is sent using electronic communication systems.
    • An e-mail client is a program that allows you to read and send e-mail. E.g. Microsoft Outlook, Mozilla Thunderbird.
    Summary
  • 29.
    • E-mail service (e.g. Hotmail, Yahoo) can be accessed using a Web browser.
    • An e-mail account is your e-mail address.
    • An e-mail message consists of a few components: Sender, Time stamp, Addressee, Subject, Body, Carbon Copy.
    Summary
  • 30. Summary
    • Before sending your e-mail, check to make sure it is clear and sounds polite.
    • Spam is e-mail you did not ask for.
    • The Internet is full of people with good intentions as well as people with bad intentions.
  • 31. Summary
    • Spammers send as many e-mail as possible to advertise their products.
    • Identity thieves wrongfully obtain and use others’ personal data in ways that involve fraud.
  • 32. Summary
    • Scammers are people who swindle you by means of fraud.
    • To be safe on the Internet, you should not let others get hold of things that they can use against you, such as your personal details.