Why do I need both anti-virus software and a firewall?
Anti-virus software protects your computer from viruses.
A firewall examines each data packet that enters or leaves your computer. It prevents hackers from accessing your computer, accessing your computer, passwords, financial information stored on your computer. It also blocks others Internet treats like hacking worms and Trojan horses that cannot be detected by anti-virus software.
Firewalls don't necessarily protect your ocmputer from all types of viruses, which is why it is recommended to install both anti-virus software and a firewall to maximize your protection.