information Network security hardware, software and data systems are protected from accidental or malicious destruction of reasons, change, disons The system for normal operation of reliable, uninterrupted service.
information security is one involving computer science Communication technology, cryptography, information security technology, applied mathematics, number theory, informary Such as the integrated multi-disciplinary subjects.
in the broad sense, all related to the network of information confident Availability, Authenticity and control technologies and theoretical research is the field of network security.
the importance of information security Ion as a resource, it's universal, shared, Value-added and more than capable of handling and the effectiveness of its human has special significance.the substance of information set Protect the information system or information network of information resources from all types of threat, disturbance and destruction, the To ensure information security.according to the international organization for standard ization definition of the meaning of information security Ly refers to the integrity of information, availability, confidential ity and reliability.
information security is of any Departments, industry must pay close attention to the problems that can not be ignored is a national security strategy.however, For different sectors and industries, Its information security requirements and the focus is different.
China's reform and opening up have brought all aspects of the de N the amount of information and requested the large-capacity, high-efficiency transmission of such information.in order to adata Communication technology have taken place in the explosive growth of the unprecedented.at present, in addition to wire communications. The short-wave, wave, microwave, and satellite radio communications are also increasingly widely used.at the same time, Foreign hostile forces in order to steal our country's political, military, economic, science and technology areas such as the seset The use of reconnaissance units, satellite and other means to form a fixed and mobile, remote and close, Air and ground a combination of three-dimensional reconnaissance network, The interception of communications I transfer the information.
from the literature insider knowledge of a society, Has long been a common occurrence.in the 2th century after 5 years, from the community to understand their computer inside of a society, Are becoming increasingly easy.whether institutions or individuals, are an increasing number of the things entrusted to the computer to co Sensitive information is through the fragile lines of communication between computer systems in the transmission, Private information stored in the computer or from computer to computer transmission, Electronic banking so that financial accounts may be available through the communication lines, The law enforcement agencies from the computer to understand the ex-offenders, doctors use computer management of medical records, ( The most important question is not illegal (unauthorized) access to (visit) Does not increase conditions to prevent transmission of information.
are many ways to transmit information, the local computer The internet and distributed database, a cellular wireless, packet-switched wireless, satellite video conferencing, E-mail and other transmission technology.information storage, processing and exchange process, there are secrets, or internet The possibility of tampering and forgery.it is not difficult to see that a single security measures have been difficult to ensure that the security F communication and information must be integrated application of security measures, that is, through technology, management and add