Your Questions About Virus

Posted by softwareguru on July 25, 2014

William asks…

What’s the difference between bacteria, virus and germs?

as i know virus is infectious diseases, and germs/bacteria is from contamination, there’s any one who can tell deeply about there diferences?

softwareguru answers:

Bacteria is a living unicellular organism capable of motion, growth, and reproduction, all on its own.

A virus is non living, it doesn’t have any cells, it isn’t capable of growth, motion or reproduction. A virus needs a host cell to “survive” (though the virus never actually survives. Once the virus attaches itself to the host cell, it implants its DNA into the cell and intstructs the host cell to produce more of the virus.

To make an analogy…

Picture a factory full of machines that make spoons. Think of the factory as the body, and the machines as a cells in the body.

A bacteria would be an person that goes into the factory and starts tearing the machine that produces spoons apart. Slowly breaking it down making it harder and harder to make spoons. If left alone, that person would mate, have children, and produce more people to break down more machines. To get rid of the bacteria and restore the machines, you have to go in and kill the bacteria. Once you do, maintenance can repair the machines or build new ones and everything is goes back to normal (so long as it didn’t destroy so many machines that the factory dies).

A virus on the other hand, is a non living substance, in this case we’ll call it a fork. This fork floats into the factory and implants itself into a small crack in one of the spoon machines. This fork wedges itself into the gears and changes them around so that the machine no longer makes spoons, but makes more forks instead. The machine spits out the forks which floats around the factory wedging itself into the other machines so that they also make forks. Eventually, if left to continue, all the spoon machines will be converted into fork machines and the factory would die. You cannot kill the forks, because they are not living, the only way to stop them is to prevent them from wedging into the machines. What happens is, as soon as the first fork infects a machine, the factories engineers go into effect patching that small crack in all of the other machines so that the forks no longer fit and makes it impossible to infect the rest of them. The forks never actually go away, and the infected fork machine will continue to produce forks (viruses) as long as the factory is alive. Even after the factory is dead, if someone were to walk into the ruins, they could pick up a for and it could get out an infect other factories. But as long as all the other machines have an immunity to them, it won’t hurt anything. However, these forks can get out of the factory and infect other factories.

“Germ” is a generic term that includes any microbe, or microscopic structure that can infect the body and cause illness, sickness and/or death. Germs include both bacteria and viruses. Also included in the germ category are fungi, and protozoa. Athletes foot, for example, is a fungi “germ” that gets into the toes and causes inflammation, itching, and swelling. Protozoa are a lot like bacteria, but are much smaller. Protozoa are often considered parasites. Malaria is a protozoa that you can get from an infected mosquito. You can also get protozoa from drinking contaminated water.

Robert asks…

how to remove a virus which is not being detected be any anti virus?

Recently i brought home a cd and unfourtunately it had a virus ..Now the problem is that no antivirus could detect it and now my computer is running pretty slow ..Is there any remedy for it?

softwareguru answers:

Are you sure it is virus ? Not some hog bloated software ?
Anyway…if u sure it’s virus you may try several ways
1. Update your AV to latest definition, or change your AV to a better one

2. Do an online scan
http://housecall.trendmicro.com/
http://www.bitdefender.com/scan8/ie.html
http://www.kaspersky.com/scanforvirus
http://support.f-secure.com/enu/home/ols.shtml

3. Submit your virus example to one of these sites (thus they may find a way to detect and clean it):
http://www.norman.com/Virus/Submit_virus_sample/en-us
http://www.virusall.com/virussubmit.shtml
http://www.virustotal.com/

4. Since the virus may have ability to disarm AV and disable ways to make any further steps to update or install other AV
You might want to scan your PC via network with a healthy PC, or by attaching your hard drive to a healthy PC.

5. Do a system restore, to the point where your PC hasn’t been infected. Which probably virus might disable the system restore.

6. Do it manually
– search for suspicious running program and virus message
– terminate it with tools such as process explorer
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
– search the google with keyword from virus message or that suspicious program. Collect info than follow what the experts say
– clean you registry

wow… Quite lengthy
Good luck!!!

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