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Nov 02, 2014





  • 1. Internet and Antivirus
    • Presented by
        • Nazran Dawn

2. Agenda

  • Internet
  • History of internet
  • Common uses of the Internet
  • Internet Threats
  • Antivirus
  • Antivirus Design Principles
  • Top Antivirus in 2007
  • 5 reasons to use Antivirus
  • Conclusion

3. Internet

  • The Internet is a worldwide, publicly accessible network of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP).

4. Internet (cont)

  • It is a "network of networks" that consists of millions of smaller domestic, academic, business, and government networks, which together carry various information and services, such as electronic mail, online chat, file transfer, and the interlinked Web pages and other documents of the World Wide Web.
          • http://

5. History of internet

    • In February 1958, United States to create the Advanced Research Projects Agency, known as ARPA.
    • U.S. Air Force lead a project to implement a network that recommended packet switching
    • The first TCP/IP-wide area network was operational by January 1, 1983,

6. History of internet (cont)

    • United States' National Science Foundation (NSF) constructed a university network backbone that would later become the NSFNet.
    • The network gained a public face in the 1990s
    • By 1996 the word "Internet" was coming into common daily usage, often refer to the World Wide Web

7. Common uses of the Internet

  • E-mail
      • Sending electronic text messages between parties in a way analogous to mailing letters
  • The World Wide Web
      • A way of accessing information over the medium of the Internet
  • Remote access
      • Allows computer users to connect to other computers and information stores easily

8. Internet uses (cont)

  • Collaboration
      • Internet 'chat'
      • Instant messaging
      • Tele conference
  • File sharing
      • A computer file can be e-mailed to colleagues and friends as an attachment

9. Internet uses (cont)

  • Streaming media
      • Video chat rooms, video conferencing , web cams
  • Voice telephony (VoIP)
      • Internet phone Exp. Vonage, Skype

10. Internet Threats

  • Virus
  • Spyware
  • Web bug (HTML-enabled email)
  • Phishing
  • Trojan horse
  • Spam

11. Virus

  • A program or piece of code that is loaded onto users computer without users knowledge and runs against users wishes. Viruses can also replicate themselves.

12. Spyware

    • Spyware is computer software that is installed surreptitiously on a personal computer to intercept or take partial control over the user's interaction with the computer, without the user's informed permission.
    • Example :
      • CoolWebSearch , CoolWebSearch , Zango

13. Web bug

  • A web bug is any one of a number of techniques used to track who is reading a web page or e-mail, when, and from what computer. Web bugs are used by e-mail marketers, spammers and phishers.

14. Phishing

  • In computing, phishing is a criminal activity to acquire sensitive information, such as usernames, passwords and credit card details, by masked as a trustworthy entity in an electronic communication.

15. Trojan horse

  • Trojan horse is a program that installs malicious software while under the appearance of doing something else. Examples include various implementations of weather alerting programs, computer clock setting software, and peer-to-peer file sharing utilities

16. Spam

  • Spamming is the abuse of electronic messaging systems to indiscriminately send unwelcome bulk messages. The most widely recognized form of spam is e-mail spam. This term is applied to similar abuses in other media.

17. Antivirus

  • What is Antivirus software?
    • Antivirus software is a computer program that detects, prevents, and takes action to disarm or remove malicious software programs, such as viruses and worms. You can help protect your computer against viruses by using antivirus software

18. Antivirus (cont)

  • We can help protect your computer against viruses by using antivirus software

Private network Internet Security perimeter Packet-filteringrouter 19. Why we need Antivirus?

  • If your computer is not protected when you connect to the internet, your computer could be effected by virus, spy ware.
    • Modern antivirus is a software package of firewall, antivirus, anti-spyware.
    • Some antivirus also have internet explorer toolbar include popup blocker, anti spam, anti fishing and email filtering.

20. History of Antivirus

      • The first publicly known neutralization of a wild PC virus was performed by European Bernt Fix (also Bernd) in early 1987. Fix neutralized an infection of the Vienna virus. First edition of Polish antivirus software mks_vir started in 1987.. Fall 1988 also saw antivirus software Dr. Solomon's Anti-Virus Toolkit released by Briton Alan Solomon. By December 1990 the market had matured to the point of nineteen separate antivirus products being on sale including Norton AntiVirus and ViruScan from McAfee

21. Antivirus Design Principles

  • Attempt to repair the file by removing the virus itself from the file
  • Quarantine the file (such that the file remains inaccessible to other programs and its virus can no longer spread)
  • Delete the infected file

22. Antivirus Design Principles (cont) 23. Top Antivirus in 2007

  • Norton Antivirus 2007
  • Mcafee VirusScan Plus
  • Trend Micro Internet Security
  • AVG Anti-Virus

24. Norton Antivirus 2007

  • Key features
    • Detects and removes viruses and spyware
    • Prevents virus-infected emails from spreading
    • Includes protection updates and new product features as available throughout the renewable service period
    • Price: $39.99 USD

25. Mcafee VirusScan Plus

  • Key features
    • Offers 3 in 1 PC Protection from viruses, hackers and spyware so you can surf the Web safely.
    • Prevents multi-pronged attacks by integrating anti-virus, firewall, and anti-spyware technologies.
    • Price: 29.99 USD

26. Trend Micro Internet Security

  • Key features
    • Antivirus Security
    • Spyware Protection
    • Personal Firewall
    • Fraud Defense
    • Price: $49.95

27. AVG Anti-Virus

  • Key features
    • A tool for scanning your hard drive and e-mail
    • Real-time shield to prevent infections
    • AVG Virus Vault for safe handling of infected files.
    • Price: free to use

28. 5 reasons to use Antivirus

  • Regular antivirus scanning
    • To help keep you safe from viruses, worms, and Trojans, Antivirus automatically scans the files and folders on your computer, including e-mail attachments as you open them.

29. 5 reasons to use Antivirus (cont)

  • Continuous firewall monitoring
    • Firewalls monitor two way traffic. This means that both inbound and outbound traffic is controlled. The firewall is also updated continually to help protect you

30. 5 reasons to use Antivirus (cont)

  • Enhanced protection from spyware
    • Today's Antivirus have antispyware technology helps protect your computer from spyware programs that secretly monitor you