Method and device for preventing from computer virus

A computer virus and virus technology, applied in computer security devices, calculations, instruments, etc., can solve problems such as the spread of computer viruses and achieve the effect of preventing damage

Inactive Publication Date: 2008-04-09
BEIJING PAIRUIGEN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Since the above-mentioned scheme still does not solve the problem of computer virus transmission, it is nec

Method used

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  • Method and device for preventing from computer virus
  • Method and device for preventing from computer virus

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Embodiment Construction

[0094] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0095] Because the computer virus or its carrier must be located in the information system that can be accessed and may run the virus program or the carrier with the virus program, the information system may be infected with the computer virus. Therefore, by cutting off the path of the virus or its carrier entering the information system or Installing anti-virus devices in the path can effectively prevent computer viruses from being introduced into the information system.

[0096] Referring to FIG. 1 , FIG. 1 is a preferred implementation of the steps and flow chart of the method for preventing computer viruses in the present invention. The various steps of the specific implementation are given:

[0097] First, in step 101, before the file or data is trans...

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Abstract

The invention provides a method for preventing computer virus. The method includes the steps that: before an external file or data are needed to be transferred into an information system, reading the whole content of the file or data first; executing a machine code instruction analysis on the content of the file or data and reorganize the operation logic; executing a simulation run on the result of the machine code instruction analysis and the result of reorganization, and giving a result report generated by the simulation run; inferring and determining the result report generated by the simulation run using the knowledge of the virus knowledge base and the inference rule, and obtaining the result of whether the file has the probability of virus existence or not; according to the result of the probability of virus existence, automatically or manually control whether the external file or data are able to be transferred into the information system or not. The invention also provides a device for realizing the method, and the device comprises a machine code instruction analysis and operation logic reorganization device, a control device, a risk assessment device, and a virus knowledge base device. The invention can effectively prevent the broadcast of computer virus.

Description

technical field [0001] The invention relates to information system antivirus technology, in particular to a method and device for preventing computer viruses by adopting information system machine code instruction analysis technology. Background technique [0002] Explanation of terminology: The computer virus or virus mentioned in the present invention all have the same meaning, including adopting the clear definition in the "Computer Information System Security Protection Regulations of the People's Republic of China", that is, a computer virus "refers to compiling or inserting A set of computer instructions or program codes that destroy computer functions or data, affect the use of computers and are capable of self-replication”; also include those inserted into information systems other than computers that destroy information system functions or data, affect the use of information systems and A set of information system instructions or program code capable of self-replica...

Claims

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Application Information

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IPC IPC(8): G06F21/00G06F21/20G06F21/56
Inventor 须清
Owner BEIJING PAIRUIGEN SCI & TECH DEV
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