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| ==Definition==
| | A '''[[w:virus|virus]]''' is a non-living pathogen with biological processes that can interrupt cellular activity. |
| The term '''computer virus''' is used to describe a [[Computers|computer]] program designed to destroy, control, or debilitate another computer or its network. Viruses could be used to erase important files or compromise a system's security and ability to process information. Normally, computer users simply say "virus" in reference to a computer virus.
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| Viruses generally do not destroy hardware themselves, but can disrupt the hardware's ability to communicate to the person using it. Viruses are "spread" through downloaded attachments or computer programs that claim to be something (such as a picture, an important computer update, or game) that they are not. They can also be spread, or ''infiltrate'' a computer through the use of a [[backdoor]], which allows a user to remotely install the virus without the user's knowledge.
| | In computer terms, a virus can also be a set of programming instructions, surreptitiously inserted into another computer or network, that can interrupt, alter or stop the functionality of other computer programs. |
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| ==Viruses as used in the ''Battlestar Galactica'' series==
| | Please select a specific reference that is related to "virus": |
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| The virus infiltration tactic was used greatly in the first [[Cylon War]]. In response, the Colonials began using simpler technologies that were impossible to reprogram or shut down. The first [[battlestar]]s, of which ''Galactica'' is a member, used computers but didn't network them or tie them to external sensors or communications, preventing a virus from entering ship's systems and minimizing damage to other systems in the event of an infection. Comparatively primitive communications gear and other hardware throughout the ships also reduced or eliminated the ability of the Cylons to hack into or shut down a shipboard function.
| | ====Computer viruses==== |
| | *For information on [[Cylons (RDM)|Cylon]] computer attack history in the [[Re-imagined Series]], see [[Cylon computer virus]]. |
| | *For information on the Colonial flight operating system software which is compromised by [[Caprica-Six]] in the [[Miniseries, Night 1|Miniseries]], see [[Command Navigation Program]]. |
| | *For information on the Colonial computer defenses used in the [[Cylon War]], see [[Galactica type battlestar#Computer Systems]]. |
| | ====Biological viruses==== |
| | *For information on a Colonial illness that affects the [[The Fleet (RDM)|Fleet]] in the episode, "[[The Woman King]]", see [[Mellorak infection]]. |
| | *For information on a ancient Colonial illness that kills an entire Cylon [[Basestar (RDM)|baseship]] and its denizens, see [[Lymphocytic encephalitis]]. |
| | *For information on an ailment that incapacitates almost all of ''{{TOS|Galactica}}''{{'|s}} [[Colonial Warrior]]s in the [[Original Series]] episode, "[[Lost Planet of the Gods, Part I]]", see [[Otarsis virus]]. |
| | *For information on a virus that affects ''Galactica''{{'|s}} crew in the [[separate continuity]] comic, [[Battlestar Galactica 2]], see [[Returner virus]]. |
| | ====Other==== |
| | *For information on the compound that destroys viruses in the ''[[Galactica Discovers Earth (Book)|Galactica Discovers Earth]]'' novelization, see [[viruscide]]. |
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| In the [[Second Cylon War]], the [[Cylons (RDM)|Cylons]] returned to their tactic of infiltration after their espionage determined that Colonial use of computer technology had become widespread once again, 40 years after the first war.
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| While the Colonial computers were likely resistant to viral infection because they could not be cracked from the outside, after [[Cylon agent]]s created [[backdoor]]s in the [[Command Navigation Program]] used by almost all Colonial military ships, the attacking Cylon fleet could transmit a signal ''through'' the backdoors programmed in the CNP, commanding the CNP to shut down or disable key elements of itself or ship systems. In a sense, instead of trying to break down the Colonial's "door" with a thug (a virus), the Cylons simply changed the door's locks so they could enter by an easier path.
| | [[de:Virus]] |
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| The compromised CNP permits the easy destruction of Colonial defenses and slaughter of countless billions of Colonial citizens living on the [[The Twelve Colonies (RDM)|Twelve Colonies]].
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| Despite the efforts of decommissioning ''Galactica'' and converting it into a museum, the battlestar was still designed to withstand this tactic as this new Cylon war began. While her last squadron of [[Viper (RDM)|Viper]] Mark VII's were infected and destroyed early in the initial attack ([[Miniseries]]), a [[Galactica Museum|squadron of Mark IIs onboard]] are redeployed. Like their carrier ship, these Vipers are also designed to ward off a Cylon infection or backdoor exploit, and hold their own against future Cylon attacks.
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| ''Galactica'' suffers an Cylon virus infection near the legendary planet of [[Kobol]] after doing what Commander [[William Adama]] (at the time, seriously wounded in an assassination attempt) would never allow: The temporary networking of several of the battlestar's computers to greatly reduce the computation time needed to find the proper coordinates of the missing civilian [[The Fleet (RDM)|Fleet]], which Jumped to a different set of coordinates ([[Scattered]]). Firewalls (software barriers that deny unauthorized intrusion) are put in place to slow down a Cylon hacking attack, but the protection loses its integrity at the very last moment. After the virus initially shuts down several systems (while, coincidentally, a squad of heavily-armored [[Cylon Centurion]]s board ''Galactica''), the battlestar uses software or other means to purge the virus ([[Valley of Darkness]]).
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| All appeared successful with the purge until weeks later when the virus returns, this time as a heuristic infection that formed itself as a "[[Logic bomb]]", threatening to deny control of the battlestar to its human crew and likely forcing the battlestar's guns on the civilian Fleet and activating the [[Computers#DC Computer|damage control systems]] to open vents to asphyxiate the crew. The virus is finally removed for good by wiping the hard drives of all computers and restoring them from backups made prior to the Cylon attack ([[Flight of the Phoenix]]).
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| See also: [[Wikipedia:Computer Virus|Computer Viruses]]
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| == Biological Viruses ==
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| Of course, viruses are also transmittable diseases of a non-bacterial nature that cause various ailments, such as the [[Wikipedia:Common cold|Common Cold]] or the [[Wikipedia:Flu|Flu]].
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| ==See Also==
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| [[Command Navigation Program]]
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| [[Computers]]
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| [[Viper (RDM)|Viper]]
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| [[Battlestar (RDM)|Battlestar]]
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| [[Gaius Baltar]]
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| [[Number Six]]
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| See: [[Wikipedia:Virus|Virus]]
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| [[Category:A to Z]]
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| [[Category:Terminology]]
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A virus is a non-living pathogen with biological processes that can interrupt cellular activity.
In computer terms, a virus can also be a set of programming instructions, surreptitiously inserted into another computer or network, that can interrupt, alter or stop the functionality of other computer programs.
Please select a specific reference that is related to "virus":
Computer viruses
Biological viruses
Other
NOTE: This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title If an article link referred you here, you might want to go back and fix it to point directly to the intended page.
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This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title.
If an article link referred you here, you might want to go back and fix it to point directly to the intended page. Also, if you wanted to search for the term "Virus", click here.
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