passive entity that contains or receives information. Access to an object potentially implies access to the information it contains. Examples of objects are records, blocks, pages, segments, files, directories, directory trees, and programs, and bits, bytes, words, fields, processors, video displays, keyboards, clocks, printers, and network nodes.
reassignment and reuse of a storage medium (e.g., page frame, disk sector, magnetic tape) that once contained one or more objects. To be securely reused and assigned to a new subject, storage media must contain no residual data ( magnetic remanence) from the object(s) previously contained in the media.
that minuscule fraction of time between hitting the send button and realizing that you have just posted your private key to alt.script-kiddies
real-time virus scanner that scans disks and files automatically and often in the background. An on-access scanner scans files for viruses as the computer accesses the files. Previously known as a resident scanner.
virus scanner started manually by the user, or invoked under certain conditions or a regular schedule. Most on-demand scanners allow the user to set various configurations and to scan specific files, folders, or disks. Previously known as a manual scanner.
encryption system based on a series of keys, each of which is used only once. Given certain limits on the length of the key in relation to the length of the message, and the use of a secure channel for...
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