I love you!! I love you. These famous three words are associated with a very famous computer virus. The virus originated in the Philippines and was created by two young Filipino programmers. This computer virus infected tens of millions of computers and cost over $5.5 billion dollars in damages worldwide. The computers were infected so rapidly that in ten days 50 million computers were infected. The virus was successful at propagating because of several reasons. One of the main reasons was that the virus was sent by email and came from someone you know, as the virus sent itself to the first 50 contacts in Outlook. Since it came from someone that you knew people would open it without any thought. Another reason it was successful was that it depended on some of the vulnerabilities of the Operating System, in this case the file was a VBS script and Microsoft’s scripting engine was on by default. It was also good at confusing computer users because even if you were computer savvy the virus tried to mask its extension in the filename by using .txt in the name. the virus also was a pain because it ran at boot up and also replaced and damaged files in with these extensions. JPG, JPEG, VBS, VBE, JS, JSE, CSS, WSH, SCT, DOC, HTA, MP2, and MP3. It replaced the files with these extensions with copied of itself. . The virus also downloaded a Trojan. This was also a time that no one was worried about computer security so you can imagine the damage this computer virus did. Nowadays it would be a little easier to catch the virus as the world has turned its attention to security. To defend this intrusion first I would have an antivirus installed and updated on every computer on the network. Next I would have a firewall installed between the internal network and the external network. I would also implement and Intrusion detection system. I would implement and anti-spam solution with web content filtering. There is really no way to protect your network 100 percent but I feel this would be one of the best ways to start.