3. Internet Growth Trends 1977: 111 hosts on Internet 1981: 213 hosts 1983: 562 hosts 1984: 1,000 hosts 1986: 5,000 hosts 1987: 10,000 hosts 1989: 100,000 hosts 1992: 1,000,000 hosts 2001: 150 – 175 million hosts 2002: over 200 million hosts By 2010, about 80% of the planet will be on the Internet
6. Simple Mail Transfer Protocol ( SMTP ) : It is the protocol used to send email messages from one server to another. Post Office Protocol ( POP3 ): It stores the messages for the recipient. To retrieve the messages, the user must connect to it using email client or the online email service IMAP: It enables a user to check email from multiple computers at different locations.
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9. WHAT HAPPENS WHEN WE – EMAIL ?!?! An email is a text message sent to a recipient using email clients such as Microsoft outlook, Juno client or online email services such as Yahoo & Gmail.
14. Is your computer spewing SPAM???? Spam or Spamming is the abuse of electronic messaging systems to indiscriminately send unsolicited messages. Email Spam is the practice of sending unwanted email messages frequently with commercial content, in large quantities to an indiscriminate set of recipients. EMAIL SPAM Unsolicited Bulk Email Unsolicited Commercial Email
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16. SCAM Scams are emails cleverly disguised as coming from real companies when they are actually trying to know your private information such as passport number, bank account, social security number etc. Again, it is one of the most common problems faced by Internet users . Work-at-home scams Nigerian scams Lottery scams Phisher scams
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