Computer security refers to a framework that focuses on protection of computer programs data, and networks from unauthorized or unintended access, destruction, or change. The security precautions related to computer information and access address four major threats;
- Theft of data
- Fraud and
- Invasion of privacy
The most basic means of protecting a computer system against theft, vandalism, invasion of privacy, and other irresponsible behaviors 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. Creation of firewalls especially when the information is on the internet so that unauthorized individuals or entities find it difficult to access it is also another strategy.
The field of cyber or IT security 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, etc. and due to its complexity, the field is also one of the major challenges of the contemporary world. Growing cyber threats such as data theft, phishing scams and other cyber vulnerabilities demand that users remain vigilant about protecting data. It is essential to understand the types of risks and vulnerabilities that exist in the Internet world. For every user, it is also important to think before connecting to someone using an online medium and prior to sharing any information with other users through the internet.
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