Computer security is the protection of computer systems and information from harm, theft, and unauthorized use. Computer hardware is typically protected by the same means used to protect other valuable or sensitive equipment, namely, serial numbers, doors and locks, and alarms. The protection of information and system access, on the other hand, is achieved through other tactics, some of them quite complex. The security precautions related to computer information and access address four major threats; theft of data, vandalism, fraud and invasion of privacy. The most basic means of protecting a computer system against theft, vandalism, invasion of privacy, and other irresponsible behaviours is to electronically track and record the access to, and activities of, the various users of a computer system. This is commonly done by assigning an individual password to each person who has access to a system. The computer system itself can then automatically track the use of these passwords, recording such data as which files were accessed under particular passwords and so on. Another security measure is to store a system’s data on a separate device, or medium, such as magnetic tape or disks, that is normally inaccessible through the computer system. Finally, data is often encrypted so that it can be deciphered only by holders of a singular encryption. Also creation of firewalls especially when the information is in the internet so that the unauthorized individuals or entities find it difficult to access it. The field is of growing importance due to increasing reliance on computer systems, the internet and wireless networks such as Bluetooth and Wi-Fi, and due to the growth of ‘smart’ devices, including smartphones, televisions and the various tiny devices. Due to its complexity, both in terms of politics and technology, it is also one of the major challenges of the contemporary world. With all that said, one can imagine how writing a computer security essay can be an uphill task, especially because it requires a great deal of research and familiarity with the terminologies that come with it. This is not hard for assignmentsaid.com as they such and other complex topics.
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