security technology domainA scope over which the same security mechanism is used to enforce a security policy.
Security TemplateA physical file representation of a security configuration that can be applied to a local computer or imported to a Group Policy object in Active…
security test and evaluationExamination and analysis of the safeguards required to protect an information system (IS), as they have been applied in an operational environment, to…
Security TestingA process used to determine that the security features of a system are implemented as designed and that they are adequate for a proposed application…
security tokenA cryptographically signed data unit that expresses one or more claims.
security token serviceA Web service that issues security tokens. A security token service makes assertions based on evidence that it trusts to whoever trusts it.
security viewThe set of security roles defined by the application assembler.
SegmentA grouping of elements that are closely related and often physically interface. It consists of CIs produced by several contractors and integrated by one.
SegmentationA process by which path control divides basic information units into smaller units, called BIU segments, to accommodate smaller buffer sizes in adjacent…
segmented encoding lawAn encoding law in which an approximation to a curve defined by a smooth encoding law is obtained by a number of linear segments.
segregationFor genes, the separation of allele pairs from one another and their resulting assortment into different cells at meiosis.
seizingThe temporary dedication of various parts of a communications system to a specific use, usually in response to a user request for service.
seizure signalIn telephone systems, a signal used by the calling end of a trunk or line to indicate a request for service.
selcallAcronym for selective calling. Calling from one station in which call identification is sent to signal automatically one or more remote stations and to…
Selected Acquisition Reports (SAR)Standard, comprehensive, summary status reports on major defense acquisition programs (ACAT I) required for periodic submission to Congress.
selected networkFor a particular message path, any intermediate network between a branch point and a subsequent branch point or convergence point is a selected network.
selection coverageA coverage whose area overlaps that of a map library. It identifies the area to extract data from, or insert data into, a map library.
Selective KillAssigns interceptors to targets on the basis of missile type, launch area, impact area, time of launch/arrival, or predicted threat utility (e.g.
selective ringingIn a party line, ringing only the desired user instrument. Note: Without selective ringing, all the instruments on the party line will ring at the same…
Selective, Adaptive DefenseSelective, adaptive defense assigns interceptors to RVs based upon defended asset values, the number of arriving RVs and time to impact.
SelectivityRefers to choosing a subset of targets either for attack or defense. (See Preferential Defense and Preferential Offense.)
self-authenticationA procedure in which a transmitting station , i.e., a calling station, establishes its own validity without the participation of the receiving station, i.
self-delineating blockA block in which a bit pattern or a flag identifies the beginning or end of a block.
self-describingAn entity whose data structure, form, or layout provides both definitions and values for the data or formats of the object A self-describing entity can be…
self-focusingIn the optical regime, the property of an element (rod or slab of material) that (a) has a refractive index gradient that is a defined function of the…
self-healingIn case of failure, there will be a hot backup instance of the application ready to take over without disruption (known as failover).
self-relative addressIn computer programming, a partial computer address that uses the base address of the computer program, in which it appears, as the ellipsed component of…
self-synchronizing codeA code in which the symbol stream formed by a portion of one code word, or by the overlapped portion of any two adjacent code words, is not a valid code…
self-testing circuitA circuit that uses the data it is retransmitting to perform tests on itself to ensure that it is transmitting properly, i.e.
Semantic analysisThis means applying a combination of general and specific thesauri and ontologies, and automatic phrasing,ÃÂ -forÃÂ example, to understand the…
semantic errorAn error in the meaning of program. A statement may have no syntax errors, but might still break the rules of the Java language.
Semantic indexingSemantic indexing of content by detection and annotation of sentences, paragraphs and other semantic structures in unstructured content.
Semantic WebExtension of the World Wide Web in which the semantics of information and services on the web is defined, making it possible for the web to understand and…
semaphoreA fancy kind of interlock that prevents multiple threads or processes from using up the same resources simultaneously.
Semi-Active Homing GuidanceA system of homing guidance wherein the receiver in a missile utilizes radiations from a target, which has been illuminated by an outside source.
Semi-Active SensorOne that does not generate radiation itself, but that detects radiation reflected by targets when they are illuminated by other BMD components.
semi-permanent connectionA connection established via a service order or via network management. [T1.627-1993]
semiactive recordA record that is infrequently referred to but is still needed for reference See also active record and inactive record.
semiautomatic switching systemIn telephone systems, a switching system in which telephone operators receive call instructions orally from users and complete them by automatic equipment.
senderA device that accepts address information from a register or routing information from a translator, and then transmits the proper routing information to a…
Sender IDA Microsoft-controlled version of SPF. An email authentication and anti-spoofing system. For more information about Sender ID, go to http://wikipedia.
sender reputationAnti-spam functionality that is enabled on computers that have the Edge Transport server role installed to block messages according to characteristics of…
sending loudness rating (SLR)The ratio in dB of the sound pressure produced by a speaker to the voltage produced by a telephone and loop as defined by ITU-T Recommendation P.79. [T1.
sending-end crossfireIn teletypewriter (TTY) systems, interference, in a given channel, caused by transmissions from one or more adjacent TTY channels transmitting from the…
Senior Agency Information Security OfficerOfficial responsible for carrying out the Chief Information Officer responsibilities under the Federal Information Security Management Act (FISMA) and…
Senior Procurement Executive (SPE)The senior official responsible for management direction of the Service procurement system, including implementation of unique procurement policies…
sensitive information1. Information, the loss, misuse, or unauthorized access to or modification of, which could adversely affect the national interest or the conduct of…
SensitivityWhen referring to a medical test, sensitivity refers to the percentage of people who test positive for a specific disease among a group of people who have…
sensitivity label1. Information representing elements of the security label(s) of a subject and an object.
Sensitivity LevelsA graduated system of marking (e.g., low, moderate, high) information and information processing systems based on threats and risks that result if a…
sensorA device that responds to a stimulus, such as heat, light, or pressure, and generates a signal that can be measured or interpreted.
Sensor AgingThe gradual degradation in performance of a sensor over time.
Sensor DataMeasurement information. For a passive sensor it is usually irradiance time, and LOS.
Sentiment analysisThe evaluation of the sentiment - typically positive or negative - of the text based on the usage of language.
SentinelABM system designed for light area defense against a low-level ballistic missile attack on the United States.
separate channel signalingSignaling in which the whole or a part of one or more channels in a multichannel system is used to provide for supervisory and control signals for the…
separation of dutiesIn secure communications, dividing responsibility for sensitive information so that no individual acting alone can compromise the security of the data…