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Friday, May 14, 2010

Antivirus Download Sites

Best Antivirus - What is the Best Antivirus Software to Protect Your PC?

Antivirus Program a Must Have For Every PC User

Basically, a computer virus is a program which has an ability of cloning itself. They have very similar characteristics with biological viruses. For instance, computer viruses can spread very fast but this time by taking advantage of unprotected PCs and unsecured networks.




Today, there are various antivirus programs developed to prevent computer systems from being compromised. Such programs work by scanning files and continuously monitoring the entire computer in case there are malicious pieces of code or suspicious activities. Antivirus software also eradicates viruses before causing further problems. Unfortunately, the number of new viruses tend to increase year by year. Some antivirus companies are even getting of hundreds of new samples a day. That means one of their problems is to keep their virus databases updated so their software can recognize files infected by the latest viruses. Of course, virus programmers will always be one step ahead in this war.



The problem did not stop there. Not only the number of viruses is increasing, but computer viruses also get smarter. New viruses are designed to be undetected by antivirus programs. Stealth and polymorphic viruses can make antivirus programs, especially the outdated ones, fail to detect. Furthermore, there are even viruses which can disable some antivirus programs. This will leave your PC unprotected. Although such viruses may not cause serious damage, your PC will be wide open to further attacks. However, although antivirus software can not work perfectly to protect your PC from all threats, their presence is still very important. For instance, with the increasing number of computer viruses created, some vendors have implemented technologies to detect and block unknown viruses. The advancement of antivirus software has to keep pace with current virus threats. Good antivirus vendors provide virus protection through ongoing support and updates. When a virus breaks out, such good vendors provide the solutions very quickly, often within hours.



New generations of viruses are able to attack through multiple entry points, from email, web browsers to file servers. That is why many popular antivirus programs are bundled with other security programs such as firewall and content filtering. A more comprehensive security system will help you protect all aspects of your PC. The main feature of an antivirus program is to detect the presence of viruses in a computer. Although some programs may not be able to disinfect an infected file, at least they are able to delete the file and prevent the contamination of the entire computer system. Clearly, although it has some limitations, an antivirus software is essential to protect your computer system from viruses and other malicious programs. While traditional antivirus programs might have become useless today, modern antivirus have a big role in securing computer systems from viruses and other threats.



An antivirus software may not be able to protect all aspects of your PC, but it still one of the most important software for every PC user. Just choose the one which is created by a reputable company. This will ensure that you will get ongoing supports and updates.

What happens when virus enters your system?

When virus enter your system then, nothing much happen. Only some specific files or folders will get damaged, but if those files and folders are very important to you, then it may cause a huge problem. So, better look at the points below:
· Sometimes the computer may not boot and hang instantly
· It takes a long time to load some programs
· It changes the size of executable files
· It corrupts (errors) the system data
· It can rename all the files with new filenames in your consciousness too
· It slows down the computer
· It increases the use of disk space and growth in file size
· It brings unwanted pictures, messages and figures on the screen
· Viruses may also show error messages on the screen
· It reduces the memory of the computer
· The computer may automatically restart in several intervals
Other symptoms can also be noticed but as there are many types of viruses , so the common symptoms among all types are enlisted above. So beware of VIRUSES

How many types of viruses are there?

Virus was created a long time ago for good purposes but later it was misused. Until the date viruses have been used for many wrong purposes. Till date more than fifty types of viruses have been created. Some types are enlisted below:
· Message carrying virus
· Boot sector virus
· System infector
· Multipartite virus
· Worms
· Polymorphic virus
· Stealth virus
· Bombs
· Macro virus
· Trojan Horse
These are the common types of viruses that spread from one computer to another as well as from the internet.

How do viruses spread?

There is not one way in which virus spreads. In thousands of ways, viruses can spread from one computer to another or from one network to another. The most common ways through which viruses can spread are:
· Booting of system with an infected media
· Opening a file infected with virus
· Downloading from unreliable source
· Opening unknown email attachments
· Executing an infected file
· Using floppy disk or any other media that are exchangeable
· Using shareware(software that is available free of charge and often distributed informally for evaluation)
· Using pirated software
· Extensive use of USB's without security system
Through other ways also, viruses can transfer or spread but these are the common ways in which it spreads.

Best way for safety: Using antiviral software

Those softwares which are especially designed to find and destroy computer viruses are antivirus softwares. Antivirus softwares look for special codes called virus signature which uniquely identifies a virus and also specifies its type. This way the antivirus works and helps all of us from being safe from viruses. This is one of the software security measures also.
Till date there are many companies that fight for viruses. Many companies have also invented antivirus. Some of the successful and useful antiviral softwares are:
· AVG
· Mac Afee
· Scan Utility
· Norton Antivirus
· PC-clinic
· Panda antivirus
· Dr. Solomon antivirus
· Avast antivirus
· Kaspersky antivirus
· NOD 32 antivirus
· Avira antivirus
· Smart Dog
. BitDefender
There are many more antiviruses that you can choose from. If you wish you can buy these antiviruses when you are online too.Note: There is a rumour that antivirus developers itself create viruses.

Be safe from viruses

There are many tips that can be followed so that you remain safe from viruses. The very common tips that every individual can follow are:
· Do not use pirated software
· Install and upgrade regular antivirus programs
· Write protect your floppy disk when using them on the computer
· Scan the mail and other unknown files of internet before opening in your computer
· Do not use computer unless the virus is totally removed from the infected computer
· Backup your system in regular basis
· Lock your computer when not in use
· Check the new software for virus before installing it
· Check the diskette of other person for virus before using it
· Use the user password system to avoid unauthorized use of the computer

Some common and simple ways have been given in the list above. You can follow other methods too, like stop working in the internet, etc. but the above ways will be the best.

Antivirus world – Introduction

Before knowing anything about the antivirus, knowing about virus is very important and that too computer virus, not the virus of related to our health. So, understanding the difference between virus and computer virus is necessary.
Virus: It is a living thing, too small to be seen without a microscope that causes infectious diseases in animals, humans and plants. For example- polio virus, rabies virus, etc.
Computer virus: They are instructions that are hidden within a computer program and are designed to cause faults or destroy data in a computer. The full form is Computer's Vital Information Resource Under Seized.
Thus, a vast difference can be seen between virus and computer virus and we are here referring virus as computer virus.
The term antivirus is usually referred as a computer term and thus it is a software or a set of programs that finds and destroys computer viruses.

Thursday, May 13, 2010

Antivirus

The software that helps you to save your computer from different malicious softwares and files - Antivirus. This is a term that is there in each and every computer user's mind because of the dangerously spreading computer virus. This virus is a computer program which is purposedly created to destroy other user's work and documents. So for the solution of this virus, certain companies have created Antivirus.