Protecting a computer

Submitted by: Noah

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The speed and accuracy of computer made people felt confident and reliable Therefore, many important information or data are saved in the computerSuch as your diary, the financial situation of a oil company or some secret intelligence of the military departmentA lot of important information can be found in the memory of computerSo, people may ask a question: Can we make sure that the information in the computer is safe and nobody can steal it from the memory of the computer? Physical hazard is one of the causes of destroying the data in the computerFor example, send a flood of coffee toward a personal computer. The hard disk of the computer could be endangered by the flood of coffee. Besides, human caretaker of computer system can cause as much as harm as any physical hazard