/Windows Vs Resistance/

Which operating system do you use in your computer? Probably you are using windows serise developed by microsoft co. About ten years ago, Windows had lots of errors and there were also the other operating systems. But now it became the operating system itself for most people, and microsoft is running alone without a rival. Some people is worrying that microsoft monopolized the market. But there are some resistance against windows. Examples of resistance are
virus
trojan horse
worm
bomb
back door. We are going to look into those more.

In computer technology, a virus is not just a kind of germ that can cause disease. It is a program that introduces itself into a system, altering or destroying the information stored in the system.
A Trojan horse is a computer virus which is inserted into a program or system and is designed to take effect after a particular period of time or a certain number of operations.
A worm is a computer program that contains a virus which duplicates itself many times in a network.

Let me tell you about The Robert Morris' Internet Worm. When he was 23 year old, he wanted to measure how big internet is. So he made worm virus, the result was the worm virus made internet stop because of some error in the worm virus. Now he is a MIT professor. This is the worm virus in a diskette.



And another thing is a open-source. Have you ever heard about Linux? Linux is typical open source software which is free and everyone can share. These things are preventing monopolization. That was a Good lecture and the last class. I thank to Dr. Yoon for the great classes. Thank you.