When your computer connects to the Internet, every site you visit is like a digital handshake: some are friendly, and some are not.
Harmful sites take advantage of vulnerabilities in your firewall to plant malicious programs that track your Web activity and collect personal data from your computer.
Install antivirus and spyware detection software to help protect your information online.
This is something that is always talked about but still not everyone does it. Make sure you do.