Computer virus

Computer virus: Encyclopedia - Computer virus

In computer security technology, a virus is a self-replicating program that spreads by inserting copies of itself into other executable code or documents. A computer virus behaves in a way similar to a biological virus, which spreads by inserting itself into living cells. Extending the analogy, the insertion of a virus into the program is termed as an infection, and the infected file (or executable code that is not part of a file) is called a host. Viruses are one of the several types of malicious software or malware. In ...

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Computer virus - Methods to avoid detection

Computer virus - Viruses and legitimate software

Computer virus: Encyclopedia II - Computer virus - Definition A virus is a type of program that can replicate itself by making (possibly modified) copies of itself. The main criterion for classifying a piece of executable code as a virus is that it spreads itself by means of 'hosts'. A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or carrying it on a removable media. Additionally, viruses can spread to other computers by infecting files on a network file system or a file system that is accessed by a ...

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cBrain computer virus - External link

Computer virus: How to Anti-virus Your Mind

A computer virus, Blaster, infected several computer networks across continents recently, disrupting all normal functions, creating havoc in the business world. During the vicious virus attack, the utilisation of the Central Processing Unit (CPU) of the computer - which is its main think tank - was found to be extremely high, overshooting all permissible limits and causing computers to behave in an abnormal fashion.

The human mind is often compared to a computer. In fact, we could draw an interesting analogy between a computer virus attack and the mind being plagued by virus-like evil thoughts.

Computer virus: Encyclopedia - CIH computer virus

CIH, also known as Chernobyl or Spacefiller, is a computer virus written by Chen Ing Hau of Taiwan. It is considered to be one of the most harmful widely circulated viruses, destroying all information on users' systems and in some cases overwriting the system BIOS. CIH computer virus - History. In September 1998, Yamaha shipped a firmware update to their CD-R400 Drives that were infected with the virus. In October 1998, a demo version of the Activision game SiN that was propagated by us ...

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Computer virus: Encyclopedia II - Computer virus - Methods to avoid detection

In order to avoid detection by users, some viruses employ different kinds of obfuscation. Some old viruses, especially on the MS-DOS platform, make sure that the "last modified" date of a host file stays the same when the file is infected by the virus. This approach does not fool anti-virus software, however. Some viruses can infect files without increasing their sizes or damaging the files. They accomplish this by overwriting unused areas of executable files. These are called cavity viruses. For example the CIH virus, or Chern ...

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Anti-virus software - Approaches to virus detection

Anti-virus software - Testing Organizations

Computer virus: Encyclopedia - Computer worm

A computer worm is a self-replicating computer program, similar to a computer virus. A virus attaches itself to, and becomes part of, another executable program; however, a worm is self-contained and does not need to be part of another program to propagate itself. They are often designed to exploit the file transmission capabilities found on many computers. The main difference between a computer virus and a worm is that a virus can not propagate by itself whereas worms can. A worm uses a network to send copies of itself to other syste ...

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Computer worm - Penalties

Computer virus: Encyclopedia - Win32/Simile

Win32/Simile (also known as Etap) is a metamorphic computer virus written in assembly language for Microsoft Windows. The virus was released in the most recent version in early March 2002. It was written by the virus writer Mental Driller. Some of his previous viruses, such as Win95/Drill (which used the Tuareg polymorphic engine), have proved very challenging to detect. When the virus is first executed, it checks the current date. If the host file (the file that is infected with the virus) imports the file User32.dll, then on ...

Computer virus: Encyclopedia - Assimilation

Assimilation (from Latin assimilatio; "to render similar") may refer to more than one article: Assimilation (linguistics), a linguistic process by which a sound becomes similar to an adjacent sound Assimilation (biology), the conversion of nutrient into the fluid or solid substance of the body, by the processes of digestion and absorption Cultural assimilation, the process whereby a minority group gradually adopts the cus ...

Computer virus: Encyclopedia - Chernobyl accident

The Chernobyl accident occurred on April 26, 1986, at the Chernobyl nuclear power plant (originally named after Vladimir Lenin) in Ukraine (then part of the Soviet Union). It is regarded as the worst accident in the history of nuclear power, producing (due to a lack of a full containment building) a plume of radioactive debris that drifted over parts of the western Soviet Union, Eastern Europe, Scandinavia, UK, and eastern USA. Large areas of Ukraine, Belarus, and Russia were badly contaminated, resulting in the evacuation and resettlement of roughly 200,000 people ...

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Chernobyl accident - Short-term effects

Chernobyl accident - Longer-term effects

Chernobyl accident - Chernobyl after the accident

Chernobyl accident - The need for future repairs

Computer virus: Encyclopedia - Vx

1., VX is the name of a nerve poison gas, a chemical weapon of mass destruction. 2., VX is shorthand for virus exchange, which is the illegal on-line swapping of malware files by computer underground communities. 3., VX is an industrial rock band from Chicago, Illinois Category: Lists of two-letter combinations ...

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Computer virus: Encyclopedia - Strain

Strain could refer to the following: Strain (materials science), the deformation of materials caused by stress on a body. Strain (biology), a variant of a plant, virus or bacteria. Strain (chemistry), a chemical stress of a molecule. Strain (injury), a muscle injury. Strain (music), Strain (manga) Strain (Doom II) a computer game total conversion. Isaac Strain, an American explorer. Julie St ...

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Computer virus: Encyclopedia - Bounty reward

A bounty is often offered by a group as an incentive for the accomplishment of a task by someone usually not associated with the group. Bounties are most commonly issued for the capture of a person or thing. They are typically in the form of money. Two modern examples of bounties are the bounty placed for the capture of Saddam Hussein by the United States and Microsoft's bounty for computer virus creators[1]. Those who make a living by pursuing bounties are known as bounty hunters. Something given or received for worthy behavior, usually on the bas ...

Computer virus: Encyclopedia - Host

Host can mean: In general English, the term host can refer to a person, organisation, animal, cell, computer or similar that receives guests or intruders In television or radio, the host of a show is the person who presents it - for example Jay Leno is the current host of The Tonight Show. In biology, a host organism harbors a parasite, mutual partner, or commensal partner, typically providing nourishment and shelter. A host can also refer to a cell infected by a virus See hos

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Computer virus: Encyclopedia - ALTIMIT OS

In the fictional .hack world, ALTIMIT OS is virtually the only surviving operating system after the Pluto's Kiss computer virus that destroyed much of the Internet in the mid-2000s. It is also the operating system that is used to play the popular, but fictional, MMORPG The World. Altimit OS was created by Altimit Corporation, with Headoffices in San Francisco, California, USA. ALTIMIT OS - The World. The World, the killer app (most popular application) of Altimit OS, was released in Dec ...

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Computer virus: Encyclopedia II - CIH computer virus - Virus specifics

CIH spreads under the Portable Executable file format under Windows 95, Windows 98, and Windows ME. CIH does not spread under Windows NT, Windows 2000, or Windows XP. Due to the fact that CIH infects a Portable Executable file, it fills in the gaps of empty space commonly seen in PE files. Hence, that earned CIH another name, "Spacefiller". The size of the virus is 1 kilobyte, but files do not grow at all. It uses methods of ju ...

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Computer virus

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