SECAMAcronym for système electronique couleur avec memoire. A television signal standard (625 lines, 50 Hz, 220 V primary power) used in France, eastern…
second (s)In the International System of Units (SI), the time interval equal to 9,192,631,770 periods of the radiation corresponding to the transition between the…
second dialtoneDialtone presented to the call originator after an access code has been dialed for access to a second, outside, telecommunications system or service. 2.
Second Strike CapabilityThe ability to survive a first strike with sufficient resources to deliver an affective counterblow (generally associated with nuclear weapons).
second windowOf silica-based optical fibers, the transmission window at approximately 1.3 m.
secondary channelIn a system in which two channels share a common interface, a channel that has a lower data signaling rate (DSR) capacity than the primary channel.
secondary emissionParticles or radiation, such as photons, Compton recoil electrons, delta rays, secondary cosmic rays, and secondary electrons, that are produced by the…
secondary frequency standardA frequency standard that does not have inherent accuracy, and therefore must be calibrated against a primary frequency standard.
secondary radarA radiodetermination system based on the comparison of reference signals with radio signals retransmitted from the position to be determined.
secondary service area[T]he service area of a broadcast station served by the skywave and not subject to objectionable interference and in which the signal is subject to…
Secondary StationA station that has been selected to receive a transmission from the primary station.
secondary subjectsubdivision of a primary subject in a hierarchal file classification system See also subheading.
secondary time standardA time standard that requires periodic calibration against a primary time standard.
SECORDAcronym for secure voice cord board. A desk-mounted patch panel that provides the capability for controlling (a) sixteen 50-kb/s wideband or sixteen…
Secret (Symmetric) Key EncryptionThis is the traditional method used for encryption. The same key is used for both encryption and decryption.
Secret KeyA cryptographic key that is used with a secret key (symmetric) cryptographic algorithm, that is uniquely associated with one or more entities and is not…
secret key encryptionAny encryption process that (a) depends on only one encryption key, known only to message senders and receivers, and (b) is used to both encode and decode…
Secret SeedA secret value that used to initialize a pseudorandom number generator. The resulting value from the random number generator remains secret or private.
sectionAn area equal to 640 acres or 1 square mile.
section boundaryThe boundary that separates a network section from the adjacent circuit section, or separates an access circuit section from the adjacent DTE (data…
section lineA line on a surface defining the position of a profile.
Section table (SEC)(SEC)Section table for the section feature class in a coverage. The SEC holds attributes about sections.
SectorA sector is a segment of the economy that shares distinctive characteristics, such as telecommunications or energy.
sector alignmentA copy-protection technique for copy protection that determines whether a diskette is an unauthorized copy by checking whether sectors are positioned…
sectoringIn magnetic or optical disk storage media, the division of tracks into a specified number of segments, for the purpose of organizing the data stored…
Secure areaa locked space (for example, cabinet, vault or room) with access restricted to personnel authorized by the laboratory director.
Secure Communication ProtocolA communication protocol that provides the appropriate confidentiality, authentication and content integrity protection.
secure communicationsTelecommunications deriving security through use of type 1 products and/or protected distribution systems. [INFOSEC-99]
secure desktopA desktop that is isolated from other processes running on the system. The secure desktop increases the security of the elevation prompt.
Secure Hash AlgorithmAn algorithm that generates a 160-bit hash value from an arbitrary amount of input data.
Secure Hash Algorithm (SHA)(SHA)SHA1 is an earlier version of the algorithm, which AWS has deprecated in favor of SHA256.
secure hash standard[The] specification for a secure hash algorithm that can generate a condensed message representation called a message digest. [INFOSEC-99]
Secure InterfaceThe physical layer connection between a gateway and a secure network.
Secure NetworkA logical portion of a network that client computers can access if they either meet corporate health policy or are exempt from meeting corporate health…
secure operating systemResident software controlling hardware and other software functions in an information system (IS) to provide a level of protection or security appropriate…
Secure Shell (SSH)A protocol that is a standard method for replacing Telnet and Remote Shell sessions to secure encrypted communication over the Internet.
Secure Socket Layer (SSL)A technology that allows Web browsers and Web servers to communicate over a secured connection.
Secure Sockets Layer (SSL)A protocol that provides secure data communication through data encryption. This protocol enables authentication, integrity, and data privacy over…
secure state[The] condition in which no subject can access any object in an unauthorized manner. [INFOSEC-99]
secure subsystem[A] Subsystem containing its own implementation of the reference monitor concept for those resources it controls.
secure transmissionIn transmission security, see secure communications. 2. In spread-spectrum systems, the transmission of binary coded sequences that represent information…
Secure/MIME (S/MIME)A secure version of the MIME protocol that allows users to send encrypted and electronically signed mail messages, even if users have different mail…
SecureAdminA security product that enables you to administer a NetApp appliance in a nontrusted environment by creating a secure exchange between a client and the…
SecureShareA suite of products that enable UNIX and Windows-based applications to concurrently access and update shared files, with the integrity and cache coherency…
SecurityThe term "security" covers a broad variety of financial instruments, including stock, promissory notes, bonds, debentures, limited partnership interests…
Security AccreditationThe official management decision given by a senior agency official to authorize operation of an information system and to explicitly accept the risk to…
security administrator1. An authority (a person or group of people) responsible for implementing the security policy for a security domain [ECMATR46]. 2.
security alarmA security-related event that has been identified by a security policy as a potential breach of security. [T1.233-1993]
Security ArchitectureThe portion of the baseline SDS architecture that is responsible for preserving the confidentiality, integrity, and assured service of any of the…
security associationA combination of identifiers, which together define Internet Protocol security (IPsec), that protects communication between sender and receiver.
Security AttributeA security-related quality of an object. Security attributes may be represented as hierarchical levels, bits in a bit map, or numbers.
security attributesA set of properties associated with a principal. Security attributes can be associated with a principal by an authentication protocol or by a J2EE product…
security audit1. Of data processing operations, an independent review and examination of system records and activities to (a) determine the adequacy of system controls…
Security AuthorizationThe official management decision given by a senior agency official to authorize operation of an information system and to explicitly accept the risk to…
Security CategoryThe characterization of information or an information system based on an assessment of the potential impact that a loss of confidentiality, integrity, or…
security certificateA set of security relevant data which is protected by integrity and data origin authentication from an issuing security authority, and includes an…
security classThe combination of classification, categories and caveats associated with an object [CESG].
security classificationA classification placed on records limiting their accessibility to those having specific authority to retrieve or use them See also restricted access.
security clearance1. The formal authorization by the Departmental Security Officer for an individual to have access to classified information, following appropriate vetting…
security constraintA declarative way to annotate the intended protection of Web content. A security constraint consists of a Web resource collection, an authorization…
security contextThe security attributes or rules that are currently in effect. For example, the rules that govern what a user can do to a protected object are determined…
Security Control BaselineThe set of minimum security controls defined for a low-impact, moderate-impact, or high-impact information system.
Security Control EnhancementsStatements of security capability to: 1) build in additional, but related, functionality to a basic control; and/or 2) increase the strength of a basic…
Security ControlsThe management, operational, and technical controls (i.e., safeguards or countermeasures) prescribed for an information system to protect the…
security copyA copy made in order to preserve the information in case the original is lost, damaged, or destroyed See also backup and vital record.
Security CriteriaThe set of requirements that should be met so the security system can provide a maximum degree of effective deterrence at the lowest cost.
Security descriptorA data structure that contains security information associated with a protected object.
security descriptor (SD)The NTFS security information associated with a file. The SD contains the owner SID; owning group SID, which is not used; the Discretionary ACL, which is…
Security DomainA set of subjects, their information objects, and a common security policy.
security facilityA set of logically associated security functions as used in the security framework [ECMATR46].
security facility interactionThe invocation of a function a security facility by another security facility [ECMATR46].
security fault analysis[An] Assessment, usually performed on information system (IS) hardware, to determine the security properties of a device when hardware fault is…