Обучение устной речи и чтению литературы на английском языке по специальности «Защита информации». В 3 ч. Ч. 1 (120,00 руб.)

В каждый раздел включены текст для чтения и перевода, послетекстовые упражнения на закрепление, отработку и использование в речи лексико-грамматических конструкций. <...> Text A Basic Principles of Information Protection. <...> Considerations Surrounding the Study of Protection Many examples of systems requiring protection of information are encountered every day: airline seat reservation systems, credit bureau data banks; law enforcement information systems; time-sharing service bureaus; on-line medical information systems; and government social service data processing systems. <...> All, therefore, require some plan to ensure that the computer system helps implement the correct authority structure. <...> Of course, in some applications no special provisions in the computer system are necessary. <...> Although there are situations in which the computer need provide no aids to ensure protection of information, often it is appropriate to have the computer enforce a desired authority structure. <...> The words ‘privacy’, ‘security’, and ‘protection’ are frequently used in connection with information-storing systems. <...> Unauthorized denial of use: an intruder can prevent an authorized user from referring to or modifying information, even though the intruder may not be able to refer to or modify the information. <...> Causing a system ‘crash’, disrupting a scheduling algorithm, or firing a bullet into a computer are examples of denial of use. <...> The biggest complication in a general-purpose remote-accessed computer system is that the ‘intruder’ in these definitions may be an otherwise legitimate user of the computer system. <...> Examples of security techniques sometimes applied to computer systems are the following: 1) labeling files with lists of authorized users; 2) verifying the identity of a prospective user by demanding a password; 3) shielding the computer to prevent interception and subsequent interpretation of electromagnetic radiation; 4) enciphering information sent over telephone lines; 5) locking the room containing the computer; 6) controlling who is allowed to make changes to the computer system (both its hardware and software); 7) using redundant circuits or programmed cross-checks that maintain security in the face of hardware or software failures; 8) certifying that the hardware and software are actually implemented as intended. <...> Historically, the literature of computer systems has more narrowly defined the term protection to be 5 just <...>