a living thing? Are viruses alive or not? To figure out this question we first have to know‚ what defines a living thing. According to the online Merriam-Webster Dictionary‚ life is in particular “an organismic state characterized by capacity for metabolism‚ growth‚ reaction to stimuli‚ and reproduction.” For about 100 years‚ scientists have repeatedly changed their mind over what viruses are. First seen as poisons‚ then as life-forms‚ then biological chemicals‚ viruses today are thought of as
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Computer Viruses Denise Bates CPET 1114-101 October 20‚2014 Flow of Presentation What Is a Computer Virus How Can A Virus Come in Contact With A Computer Different Types of Viruses What Is a Computer Virus A computer virus is something that affects everything on your computer. Computer viruses were first seen in the 1980’s which came about of many features. The first factor was the spread of personal computers (PCs) Viruses are basically brought into your computer without knowing
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COMPUTER VIRUSES AND “FALSE AUTHORITY SYNDROME” 4TH EDITION © 1995‚97 ROB ROSENBERGER; ALL RIGHTS RESERVED. INTERNET E-MAIL: us@kumite.com WORLD WIDE WEB: http://www.kumite.com/myths ABSTRACT ......................................................................................................................................................................1 Copyright notice & distribution policies .................................................................................................
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Why Are Computer Viruses Perceived as Harmful? About a year ago‚ we asked the participants of the electronic forum Virus–L/comp.virus‚ which is dedicated to discussions about computer viruses‚ to list all reasons they could think about why do they perceive the idea of a "beneficial" virus as a bad one. What follows is a systematized and generalized list of those reasons. This section lists the arguments against the "beneficial virus" idea‚ which have a technical character. They are usually the
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NATURE AND DEVELOPMENT OF VIRUSES The Nature of Viruses Viruses are sub-cellular agents of infection that must utilize the cellular machinery of bacteria‚ plants or animals in order to reproduce. Composed of a single strand of genetic material (DNA or RNA) encased in a protein capsid‚ a virus is too small to be seen by standard light microscopy; indeed‚ most are less than one hundredth the size of a bacterium. Specific proteins on the viral capsid attach to receptors on the host cell; this
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A computer virus is an illegal and potentially damaging computer program designed to infect other software by attaching itself to any software it contacts. In many cases‚ virus programs are designed to damage computer systems maliciously by destroying or corrupting data. If the infected software is transferred to or accessed by another computer system‚ the virus spreads to the other system. Viruses have become a serious problem in recent years‚ and currently‚ thousands of known virus programs
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VIRUSES Viruses are not classified in any kingdom yet because they are not really alive. They only show signs of life after they infect a host cell. Virus: lifeless particle that does not carry out any METABOLIC functions on its own and CANNOT REPRODUCE on its own until it invades a living HOST cell Viral history: Viral history is relatively short. It begins with the isolation of the human influenza virus in the 1930s and crystallization of the tobacco mosaic virus in 1933‚ and moves through
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10 Worst Computer Viruses of All Time Computer viruses can be a nightmare. Some can wipe out the information on a hard drive‚ tie up traffic on a computer network for hours‚ turn an innocent machine into a zombie and replicate and send themselves to other computers. If you’ve never had a machine fall victim to a computer virus‚ you may wonder what the fuss is about. But the concern is understandable -- according to Consumer Reports‚ computer viruses helped contribute to $8.5 billion in consumer
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Computer Viruses and their Effects on your PC Table of Contents What is a Virus? .............................................1 HOW A VIRUS INFECTS YOUR SYSTEM: .............................2 HOW DOES A VIRUS SPREAD? .....................................3 BIGGEST MYTH: "I BUY ALL OF MY PROGRAMS ON CD ROM FROM THE STORE". STORE BOUGHT SOFTWARE NEVER CONTAINS VIRUSES.... 3 INFECTION (DAMAGES) ..........................................4 PROTECT YOUR COMPUTER‚ NOW!! .........................
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No computer should go without an anti-virus program. There are many different companies that offer a wide variety of anti-virus software. Three major companies that have some of the top anti-virus software are; Bit Defender total security‚ Kaspersky and Norton. As technology advances virus creators are learning more and more. One thing they learned was to load the virus into the memory so the virus could keep running in the background as long as the computer remained on. Another thing they learned
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