Security Software

As we have already noted, security software refers to programs designed to help secure a computer system or computer network. Types of security software include: anti-virus software, anti-spyware software and firewalls.

Anti-virus software is used to prevent, detect and remove malware such as: computer viruses, adware, backdoors, keyloggers, rootkits, spyware, trojan horses and worms.

One of the most popular anti-virus programs is the free edition of Avast! You can find full details of how to install it here.

Another popular free anti-virus program is AVG. You can obtain installation details here.

firewall is used to prevent intruders from gaining access to a network. It can be either hardware- or software-based, but in this course we will be concerned primarily with software-based firewalls.the main function of a firewall is to maintain control of incoming and outgoing network traffic by analysing data packets and deciding whether or not they should be allowed through.

One of the most popular firewall programs is the free edition of Zone Alarm. You can find full details of how to install it here.

Another popular free firewall program is Comodo. You can obtain installation details here.

Congratulations! You have now reached the end of the Computer Systems Fundamentals course. Remember, you can go back to any topic using the Menu near the top of the page.