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Computer Security - School Essays

Computer Security


About two hundred years before, the word "computer" started to appear in the dictionary. Some people even didn't know what is a computer. However, most of the people today not just knowing what is a computer, but understand how to use a computer.
Therefore, computer become more and more popular and important to our society. We can use computer everywhere and they are very useful and helpful to our life. The speed and accuracy of computer made people felt confident and reliable. Therefore, many important information or data are saved in the computer. Such as your diary, the financial situation of a oil company or some secret intelligence of the military department. A ...

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as much as harm as any physical hazard. For example, a cashier in a bank can transfer some money from one of his customer's account to his own account. Nonetheless, the most dangerous thief are not those who work with computer every day, but youthful amateurs who experiment at night --- the hackers.
The term "hacker "may have originated at M.I.T. as students' jargon for classmates who labored nights in the computer lab. In the beginning, hackers are not so dangerous at all. They just stole computer time from the university. However, in the early 1980s, hackers became a group of criminals who steal information from other peoples' computer.
For preventing the hackers and other criminals, people need to set up a good security system to protect the data in the computer. The most important thing is that we cannot allow those hackers and criminals entering our computers. It means that we need to design a lock to lock up all our data or using ...

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are produced by techniques beyond the reach of the average computer criminals. One of the three card-key is called watermark magnetic. It was inspired by the watermarks on paper currency. The card's magnetic strip have a 12-digit number code and it cannot be copied. It can store about two thousand bits in the magnetic strip. The other two cards have the capability of storing thousands of times of data in the magnetic strip. They are optical memory cards (OMCs) and Smart cards. Both of them are always used in the security system of computers.
However, it is not enough for just using password system and card-keys to protect the memory in the computer. A computer ...

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Computer Security. (2005, January 10). Retrieved November 22, 2024, from http://www.essayworld.com/essays/Computer-Security/20352
"Computer Security." Essayworld.com. Essayworld.com, 10 Jan. 2005. Web. 22 Nov. 2024. <http://www.essayworld.com/essays/Computer-Security/20352>
"Computer Security." Essayworld.com. January 10, 2005. Accessed November 22, 2024. http://www.essayworld.com/essays/Computer-Security/20352.
"Computer Security." Essayworld.com. January 10, 2005. Accessed November 22, 2024. http://www.essayworld.com/essays/Computer-Security/20352.
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PAPER DETAILS
Added: 1/10/2005 04:06:46 PM
Category: Computers
Type: Premium Paper
Words: 2496
Pages: 10

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