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.
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
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
Allows computer users to connect to other computers and information stores easily
8. Internet uses (cont)
A computer file can be e-mailed to colleagues and friends as an attachment
9. Internet uses (cont)
Video chat rooms, video conferencing , web cams
Voice telephony (VoIP)
Internet phone Exp. Vonage, Skype
10. Internet Threats
Web bug (HTML-enabled email)
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.
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.
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.
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
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.
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
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