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What is a computer network?  A computer network is a  collection of autonomous computers interconnected by a single technology is called a computer network. Two computers are set to be interconnected if they are able to exchange information. Connection can be through a copper  wire, fiber optics, microwaves, infrared or satellite. There are different types of computer networks such as LAN, WAN, and MAN.

LAN is a local  area network that would most likely require broadcast network with a connection to the internet (packet switched network). In order to use a LAN,  you would need special security measures are needed to stop users from using programs and data that they should not have access to. WAN is a wide area network that provides long distance transmission of data, voice, image and video information over large geographical areas that may comprise a country, a continent. In order to use a WAN, you  would need a good firewall to restrict outsiders from entering and disrupting the network, thus, causing security to be a real issue when many different people have the ability to use information from other computers. MAN is a metropolitan area network that is designed to extend over an entire city.

How are they similar? They are similar since all of these type of computer networks are susceptible to computer viruses and network worms.  Network worms are sent in several ways such as files sent as email attachments, via a link to a web or FTP resource, via a link sent in an ICQ or IRC message, via P2P (peer-to-peer) file sharing networks, and as network packets. If these viruses/worms attach to computers over a network, it will be deadly to our economy.  It’s bypassal of security applications could leak private information leading to identity fraud, and industrial espionage.  If the public becomes aware of the leak of private information, and the use of industrial espionage it could ruin their image, thus, preventing people to use their business.  If a customer can’t trust several business in their area due to security concerns, the local economy will tank. Thus, showing that worms could change the local economy by one click of a button.