Signals intelligenceSignals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication (electronic intelligence—abbreviated to ELINT). As classified and sensitive information is usually encrypted, signals intelligence may necessarily involve cryptanalysis (to decipher the messages).
Pattern-of-life analysisPattern-of-life analysis is a method of surveillance that documents or understands the habits of a person or population. Motives may include security, profit, scientific research, regular censuses, and traffic analysis. The data of interest may reflect anything in a person or persons' life: their travels, purchases, internet browsing habits, choices, and so forth. The data is used to predict a subject's future action or to detect anomalous behavior.Call signIn broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally assigned by a government agency, informally adopted by individuals or organizations, or even cryptographicallyencoded to disguise a station's identity.
Social network analysisMetricsAlgorithmsCentralityGroup centralityDegreeMotifClusteringDegree distributionAssortativityDistanceModularityEfficiency ModelsListsCategoriesTopicsSoftwareNetwork scientistsSocial network analysis (SNA) is the process of investigating social structures through the use of networks and graph theory.
CounterintelligenceOffensive measures using enemy information Civilian photo technicians (in back of jeep) working for Counter Intelligence Corps are accounted for at a checkpoint in Potsdam, Germany, on July 14, 1945 Counterintelligence (counter-intelligence) and its primary subfield, counterespionage (counter-espionage), are activities aimed at protecting an agency's intelligence program from an opposition's intelligence service.
CommunicationTransmission of information"Communicate" redirects here. For other uses, see Communicate (other).There are many forms of communication, including human linguistic communication using sounds, sign language, and writing as well as animals exchanging information and attempts to communicate with intelligent extraterrestrial life.Communication is commonly defined as the transmission of information.
CryptanalysisCryptanalysis (from Greekkryptós'hidden' and analýein'to analyze') refers to the process of analyzing information systems in order to understand hidden aspects of the systems. Cryptanalysis is used to breach cryptographic security systems and gain access to the contents of encrypted messages, even if the cryptographic key is unknown.
Computer securityProtection of computer systems from information disclosure, theft or damageComputer security (also cybersecurity, digital security, or information technology (IT) security) is a subdiscipline within the field of information security.
Military intelligenceMilitary intelligence is a military discipline that uses information collection and analysis approaches to provide guidance and direction to assist commanders in their decisions. This aim is achieved by providing an assessment of data from a range of sources, directed towards the commanders' mission requirements or responding to questions as part of operational or campaign planning.Known-plaintext attackThe known-plaintext attack (KPA) is an attack model for cryptanalysis where the attacker has access to both the plaintext (called a crib) and its encrypted version (ciphertext). These can be used to reveal secret keys and codebooks.
SoftwareSoftware (SW) consists of computer programs that instruct the execution of a computer. Software also includes design documents and specifications. The history of software is closely tied to the development of digital computers in the mid-20th century. Early programs were written in the machine language specific to the hardware.
EncryptionIn cryptography, encryption is the process of transforming information in a way that, ideally, only authorized parties can decode. This process converts the original representation of the information, known as plaintext, into an alternative form known as ciphertext. Encryption does not itself prevent interference but denies the intelligible content to a would-be interceptor.*As an Amazon Associate I earn from qualifying purchases.