- Any virus that infects files on disk, usually executable files with filename extensions of .COM, .EXE, and .OVL. An unexpected change in the file size may indicate an infection. In certain cases, the original program is replaced with a new file containing an infected program.
Dictionary of networking . 2014.
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virus — A program intended to damage a computer system without the user s knowledge or permission. A virus clones itself from disk to disk or from system to system over a network. Numbers are hard to come by, but certain authorities claim that… … Dictionary of networking
Virus — This article is about the biological agent. For other uses, see Virus (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to viruses. Viruses … Wikipedia
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Ambulance (computer virus) — Ambulance is a file infecting virus and it does not become memory resident. It will only infect one .COM file in any given directory, but will not infect the first one. This means there must be at least two .COM files in the directory for it to… … Wikipedia
polymorphic virus — A form of virus that can change its appearance to avoid detection. The virus encrypts itself using a special formula each time an infection occurs. Virus detecting software uses special scanning techniques to find and remove polymorphic… … Dictionary of networking
boot sector virus — A virus that infects the master boot record of a computer by overwriting the original boot code with infected boot code. This kind of virus is usually spread to a hard disk from an infected floppy disk being used as a boot disk. See also… … Dictionary of networking
macro virus — An executable program that attaches itself to a document created in Microsoft Word or Excel. When you open the document and execute the macro, the virus runs and does whatever damage it was programmed to do. See also boot sector virus; file … Dictionary of networking
multipart virus — A form of virus that infects both the boot sector of a hard disk and executable files. Multipart viruses are difficult to locate because they use stealth and polymorphic techniques to avoid detection. See also boot sector virus; file… … Dictionary of networking
stealth virus — A form of virus that attempts to hide from antivirus software and from the operating system by remaining in memory. See also boot sector virus; file infecting virus; macro virus; multipart virus; polymorphic virus; Trojan Horse; vaccine … Dictionary of networking
Abraxas (computer virus) — Computer virus Fullname = Abraxas Common name = Abraxas Technical name = Abraxas Family = N/A Aliases = Abraxas5 Classification = Virus Type = DOS Subtype = COM and EXE infector. IsolationDate = 1993 Isolation = Unknown Origin = Europe Author =… … Wikipedia