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“信息保障”(information assurance,IA)概念是美国国防部于20世纪90年代率先提出的,后经多次修改、完善.已得到世界范围的广泛认可。就其本质来说,信息保障是一种保证信息和信息系统能够安全运行的防护性行为.是信息安全在当前信息时代的新发展。信息保障的对象是信息以及处理,管理.存储、传输信息的信息系统;目的是采取技术.管理等综合性手段.使信息和信息系统具备机密性、完整性、可用性、可认证性.不可否认性.以及在遭受攻击后的可恢复性。
The concept of “information assurance” (IA) was first proposed by the U.S. Department of Defense in the 1990s and has been revised and improved many times. It has been widely recognized worldwide. By its very nature, information assurance is a protective act that ensures the safe operation of information and information systems and is a new development of information security in the current information age. The object of information security is information as well as information processing and management, information system for storing and transmitting information, and the purpose is to adopt comprehensive measures such as technology and management to make information and information system possess confidentiality, integrity, usability and authenticity. As well as recoverability after being attacked.