Free Internet Security Software

Here is a list of four free Internet Security programs I recommend for those on a budget. Keep in mind that free software often comes with limitations, but are fully functional. Some of them require manual updating, but that is a small price to pay for great free software. Let us start with an Anti-Virus program:

(***Disclaimer: Never install and run two anti-virus programs on the same system.***)

AVG Free https://www.avast.com/

Upside: Here is a fully functional Anti-Virus program that has Anti-Virus, Anti-Spyware, E-mail, and link scanners. The program is fully automatic in updating itself. It can be updated from a file (USB drive) when you have to quarantine a system by disconnecting it from the internet/intranet.
Downside: There is no free technical support. Support for this product is sold at blocks of 15 minutes.

Next is a Firewall program:

(***Disclaimer: Before installing a firewall in Windows XP / Vista, disable the Windows Firewall in the Control Panel first. Moreover, never install and run two software firewalls on the same system.***)

ZoneAlarm http://www.zonealarm.com/

Upside: The program is fully automatic in updating itself.
Downside: It only provides inbound and outbound protection, but does it in full stealth mode. It also requires internet access to install.

Let us now look at two free spyware/malware programs. My first choice is Malwarebytes Anti-Malware. Note: I ranked Malwarebytes first only because it can be installed and run without the need for internet access (I use USB drives for installing software on quarantined systems).

Malwarebytes Anti-Malware https://www.malwarebytes.com/

Upside: It is an excellent malware program. It can be installed and run without internet access (always download the latest version first).
Downside: You have to open the program and manually update it.

Spybot https://www.safer-networking.org/

Upside: It is an excellent spyware scanner with many features, including an ‘Immunization’ feature for your internet browser. It can also update itself when the program is started.
Downside: It requires internet access to install. Not a good thing if you have to quarantine a system by disconnecting it from the internet/intranet.