Since new viruses are released onto the Internet every day, an antivirus software program that provides free upgrades is the smartest choice to make.
Your antivirus program should also use real time scanning and have the ability to scan emails for the best protection.
Another important factor that should be considered before you choose antivirus software is a firewall . Many antivirus software programs come with firewall software that can be installed along with the antivirus software.
Firewalls are designed to prevent unauthorized activity on a server or between a network, and protect the internal network from hackers or intruders that might try to use the Internet to break into your system(s). On a network or PC, firewall software is used to block Internet users from accessing files on your computer other than public folders. Some firewalls are built right into your web server. If your server or hosting company has one already, it is not necessary to get an antivirus program that comes with its own firewall.
Hardware firewalls are very common with networked companies that are connected to the Internet. You do not need a hardware firewall for a home PC or small home network, but for a company or large network, a hardware firewall is a definite necessity.
If you have a cable or DSL modem, but don't have a firewall, it is possible for someone to gain access to your computer via the Internet at any time because you are always connected.
