Dealing with viruses is a common problem to anyone who has a PC or a notebook computer. To make that worse, many people never become aware of virus infestations at all. And even more people know next to nothing about what they should do when a computer crashes or hangs unexpectedly. Nonetheless, viruses are left to rampage the net and prey on the unsuspecting. In order to avoid falling prey into this, ample knowledge on computer viruses is necessary.
A person must know the first thing about viruses if he is to avoid them. That is, viruses love working undercover. In most cases a person doesn't even know his computer is brimming with viruses. It's not uncommon for people to become aware of it only too late, when the damage has been done and already beyond repair - or at least, beyond their ability to repair. This happens because viruses work covertly. One infected file is all that is necessary to scatter the disease. That single file is sometimes a malicious download from a malicious website, other times just an anonymous email downloaded from your email server.
Once that file is opened, viewed, copied, or used in any way that renders it "active" for a short moment, there is the risk of spreading the infection to other files. Before the person knows it, the computer has viruses all over. Virus removal, to this point, is still possible, although it may be a bit more difficult. Of course, a person must know that virus removal is only the second best option. Precaution should always be the first. In this case, however, virus removal may be the only solution.
Virus removal could take hours, days, and even weeks, for someone who doesn't know his way around an operating system. That makes it practical to find professional help for the task, especially if the person doesn't have all the time to root out and pull the virus-infested files. On occasion, virus removal is also possible with little or no help at all. To begin with, there are free virus scanners readily available for download on the Internet such as Avira AntiVir, Avast! Free Home Edition, and AVG. Each of these software programs requires little knowledge of the virus rooting and removal process. After download and installation, many of these software programs will automatically update the virus database, a step necessary to filter out the system.
One thing a person must remember is that while antivirus software programs are mostly automated, they are next to useless if the virus database isn't updated periodically. Gone are the days of the ordinary Trojan virus. Today, virus infestations have made it into an altogether more dangerous level. Databases try to catch up quickly, but it's inevitable to be outpaced every now and then. It would be a grave mistake to let the antivirus database become outdated, and later trust the scanner to safeguard the system just as efficiently.
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