A system security issue 15

Computer information systems are not secure, and their insecurity factors include the computer information system itself, natural, and man-made.

The factors that can lead to the insecurity of computer information systems include software systems, hardware systems, environmental factors and human factors.

1.Software System:

The software system generally includes system software, application software and database parts. Software is a program written in a programming language that can be processed by a machine, which can be tampered with or stolen, and once the software is modified or destroyed, it will damage the function of the system and even paralyze the entire system. The data inventory has a large amount of various data, and some data materials are invaluable, and if they are destroyed, the loss is difficult to estimate.

2.Hardware system:

Hardware is all hardware except software, which is the most vulnerable to destruction or theft, and its secure access control function is relatively weak. Information or data is transmitted between hosts or between hosts and terminals and networks through communication lines, and may also be intercepted during transmission.

3.Environmental factors:

Electromagnetic radiation: computer equipment itself has the problem of electromagnetic radiation, and it is also afraid of the radiation and interference of external electromagnetic waves, especially its own radiation carries information, which is easy to be received by others, resulting in information leakage.

Ancillary support system: Interruption or abnormal operation of water, electricity, and air conditioning will affect the operation of the system.

Natural factors: fire, electricity, water, static electricity, dust, harmful gases, **, lightning, strong magnetic fields and electromagnetic pulses and other hazards. Some of these hazards can damage system equipment, while others can damage data or even destroy the entire system and data.

4.Human Factors:

The level of safety management is low, the technical quality of personnel is poor, operation errors or mistakes, and illegal and criminal acts.

5.Data Entry Section:

The data is processed through the input device input system, and the data is susceptible to tampering or false data input.

6.Data Output Section:

The processed data is converted into human-readable files and output through a variety of output devices, where the information can be leaked or stolen in the process.

What can you do with only freezing point? It needs to be used with other software. If you don't have antivirus software installed, that's fine. So if you don't want the system to be damaged, you have to install anti-virus software, firewalls are also the best, and there are 360 security guards.

Here's how:

1: Press the F8 key before entering the Windows system boot screen to dig wide, and then the system boot menu appears, select safe mode to log in to enter, 2: After entering the safe mode, click "Start" "All Programs" "Accessories" "System Tools" "System Restore", Squire.

3: Finally, as long as you select the restore point that has been manually set up recently and other automatic restore points, you can, but it is best to click the "Scan the affected program before the bright sequence" button, how to restore the system in safe modeWin7 is so simple, and it is also a very practical method.

The bridge you installed should be the smart and simple version of the XP will appear your problem,It is estimated that you are not entering the safe mode,Stool shed but the original mode,You can try to try the XP drive disk to repair the XP can enter the safe mode! ～