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Abraxas (computer Virus)
Abraxas, also known as Abraxas5, discovered in April 1993, is an encrypted, overwriting, file infecting computer virus which infects COM file, .COM and .EXE files, although it does not infect . It does not become memory resident. Each time an infected file is executed, Abraxas infects the copy of located in the C:\DOS directory (creating the file if it does not exist), as well as one EXE file in the current directory. Due to a bug in the virus, only the first EXE file in any directory is infected. Abraxas-infected files will become 1,171 bytes in length and contain Abraxas' viral code. The file's date and time in the DOS disk directory listing will be set to the system date and time when infection occurred. The following text strings can be found within the viral code in all Abraxas infected programs: "*.exe c:\dos\dosshell.com .. MS-DOS (c)1992" "->>ABRAXAS-5<<--" "...For he is not of this day" "...Nor he of this mind" Execution of infected programs will also result in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Virus
A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code. If this replication succeeds, the affected areas are then said to be "infected" with a computer virus, a metaphor derived from biological viruses. Computer viruses generally require a host program. The virus writes its own code into the host program. When the program runs, the written virus program is executed first, causing infection and damage. A computer worm does not need a host program, as it is an independent program or code chunk. Therefore, it is not restricted by the host program, but can run independently and actively carry out attacks. Virus writers use social engineering deceptions and exploit detailed knowledge of security vulnerabilities to initially infect systems and to spread the virus. Viruses use complex anti-detection/stealth strategies to evade antivirus software. Motives for creating viruses can inclu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trident Polymorphic Engine
A trident is a three- pronged spear. It is used for spear fishing and historically as a polearm. The trident is the weapon of Poseidon, or Neptune, the God of the Sea in classical mythology. The trident may occasionally be held by other marine divinities such as Tritons in classical art. Tridents are also depicted in medieval heraldry, sometimes held by a merman-Triton. In Hinduism, it is the weapon of Shiva, known as ''trishula'' (Sanskrit for "triple-spear"). Etymology The word "trident" comes from the French word ''trident'', which in turn comes from the Latin word ' or ': ''tri'' meaning "three" and ''dentes'' meaning "teeth", referring specifically to the three prongs, or "teeth", of the weapo The Greek language, Greek equivalent is (''tríaina''), from Proto-Greek ''trianja'', meaning "threefold". The Greek term does not imply three of anything specific, and is vague about the shape, thus the assumption it was originally of "trident" form has been challenged. La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution
Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed on from parent to offspring during reproduction. Different characteristics tend to exist within any given population as a result of mutation, genetic recombination and other sources of genetic variation. Evolution occurs when evolutionary processes such as natural selection (including sexual selection) and genetic drift act on this variation, resulting in certain characteristics becoming more common or rare within a population. The circumstances that determine whether a characteristic should be common or rare within a population constantly change, resulting in the change in heritable characteristics arising over successive generations. It is this process of evolution that has given rise to biodiversity at every level of biological organisation, including the levels of species, individual organisms an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
