List of ISPs Providing Security Software

This article lists the ISPs that provide security software (anti virus, personal firewall and anti spyware) either for free or at a discounted rate as part of broadband service. I strongly recommend downloading and installing the security software if you are using one of these providers. Since it's a service with no extra charge, there is no reason whatsoever to not use it. Security software does not guarantee that your PC is 100% secure, but it is a first line of defense and enormously better than not having any security software installed.

There is one cautionary note: All this security software will slow down your system a bit. Although most of the time performance degradation should be acceptable.

And here is some rationale why ISPs should provide free anti virus and firewall.