There are many antivirus available either free or paid, one free Antivirus, which is widely used is AVG. AVG recently released a new version of their antivirus program that covers the latest developments and improvements to protect users from online threats and other threats to computer systems.
AVG is one of the best free antivirus, so if you like the free antivirus then Antivirus 2011 Free Edition is one of the antivirus software that you can choose.
Virus on the computer are very disturbing and dangerous, with various characteristics of viruses, when spread on the computer will arise various problems, such as making computer performance slower, damage to the registry, and even data loss. To reduce the risks that may be caused by a virus in the computer, then we should use antivirus. There are many anti virus available, from paid to free antivirus, we can use it as needed. Using antivirus is the best solution, to reduce the problems caused by viruses, worms, Trojans, and various other dangerous scripts that could cause damage to the computer, either minor or heavy damage.