Anti-virus software protects your computer from viruses. How does it do this?
What does anti-virus software do if it finds a virus?
How can you make sure that you use anti-virus software properly?
What does a firewall actually do?
What is the danger of not having a firewall set up on your computer?
When do we normally have to unblock programs on a firewall?
How can you make sure that you are using your firewall safely?