Why Anti Virus Software, a Must Have for Every Pc?
By definition, a virus is a computer program that is able to copy itself and infect other computers. The first one, according to Wikipedia, was seen almost half a century ago. The Creeper virus was detected in ARPANET, a predecessor of the World Wide Web. This code is compared to their virus dictionaries and if a match is found, the antivirus program attempts to clean the suspicious part, without damaging the original data. Another method of fighting viruses is to monitor computer activity, also known as heuristic analysis. It was using the modem connection to replicate on other PCs and when it achieved its goal, it displayed the following message IM THE CREEPER: CATCH ME IF YOU CAN. Anti virus software is another kind of computer programs that appeared because of the need to disinfect computers from viruses. Reaper was the first of its kind and its aim was the Creeper virus. You can visit Some people said that they might have shared the same creator, but this was never proved.
Since the first antivirus program, viruses and methods to fight them evolved rapidly. Most of the times, the next step in evolution is done by computer viruses and antivirus creators struggle to fight back and invent new ways to clean those pesky bugs. The common approach of antivirus software is to scan files, memory or registries from your computer and detect malicious code. This code is compared to their virus dictionaries and if a match is found, the antivirus program attempts to clean the suspicious part, without damaging the original data. Another method of fighting viruses is to monitor computer activity, also known as heuristic analysis. This includes monitoring memory and ports traffic for any signs of infection. A modern approach is the so called sandbox method. It involves running the suspicious file into a simulated operating system and analyzing the results. No matter the method, if a virus is found, the antivirus first attempts to disinfect the file. If its unsuccessful, or go to the infected file is quarantined (isolated from other programs) or in worst case, deleted.
Its very important to have a reliable antivirus program installed because there can be viruses on a file you download, inside an email attachment or even a website can include some malicious code to infect your PC. Some of the programs that are out there and can do the task are free, but most of them require payment. This code is compared to their virus dictionaries and if a match is found, the antivirus program attempts to clean the suspicious part, without damaging the original data. Reaper was the first of its kind and its aim was the Creeper virus. Another method of fighting viruses is to monitor computer activity, also known as heuristic analysis. Almost all include updates of their viruses database, to make sure your PC is protected to the newest threats. AVG AntiVirus Free, BitDefender Free, Comodo AntiVirus and PC Tools AntiVirus Free Edition are only a couple of the free antivirus programs available on the Internet.
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March 14th, 2010 at 3:48 pm
Must I delete files that Avast anti-virus is unable to scan?
I have an Avast anti-virus free software on my computer and I did a through scan on my whole computer. The scan is finished but there are 27 files that Avast is unable to scan, it says "Unable to scan: Archive is password protected" on each and every one of those files. What does this mean? Does it mean that the files could be infected with a virus or other malicious software? Must I delete those files?
March 14th, 2010 at 8:50 pm
now change you anti virus and install the new the quick heak total security it is better then any oe.
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it is clean the virus
March 14th, 2010 at 8:52 pm
its probably some password protected .zip files and if you don’t know what they are, check the location of them and see if you recognize the app, if not then you still should see what that app is
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March 14th, 2010 at 8:54 pm
Sounds like Vista, I have no experience with, but I know you may need those files, do not automatically delete them. Start in Safe Mode(Vista have that?), search and find one file, check the properties to see more clearly what your trouble is.
These may be operating system files, perhaps encrypted, but obviously well protected. If you are in WINXP, there is another administrator account in safe mode, you should definitely check this account, and give it a strong password, if it has none. Well, that’s about as much as I can give you in this area, good luck with it!
um, shiva.ra- we wouldn’t use OE for a virus anyway….no disrespect intended.
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