You will understand and explore the vulnerability of operating systems, software, and networks. Then, you will get into the minds of hackers and crackers, developing an understanding of the exploits they use to access your computer without your knowledge. You will find out why, where and how viruses, worms, and blended threats are created. You will learn a safe way to handle files and data across the Internet through a virtual private network. By the end of this course, you will be able to install and configure a firewall to build an impenetrable moat around your computer or network.