Cyber Security Glossary

Find definitions for IT security and compliance in our online glossary of key terms, acronyms, and vocabulary.

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  • Term
    Definition
  • "Domain expertise implies knowledge and understanding of the essential aspects of a specific field of inquiry."
  • "Differences between the source and target domain data"
  • An external hardware devices with some memory inside it.
  • "The practice in which tech workers use their own product consistently to see how well it works and where improvements can be made."
  • A duplicate is an accurate digital reproduction of all data objects contained on the original physical item.
  • Definition: The automated, on-the-fly changes of an information system's characteristics to thwart actions of an adversary.
  • "The process in which one or more paths are defined and may be utilized based on the conditions present at the time of execution."
  • A top most e-mail message store is the location in which an e-mail system stores its data. For instance, an Outlook PST (personal storage folder) is a type of top most file that is created when a user’s Microsoft Outlook mail account is set up. Additional Outlook PST files for that user can(...)
  • "An attack in which an attacker listens passively to the authentication protocol to capture information that can be used in a subsequent active attack to masquerade as the claimant."
  • "a problem or situation, especially in computer programming, that only happens at the highest or lowest end of a range of possible values or in extreme situations:"
  • Definition: In the NICE Framework, cybersecurity work where a person: Conducts training of personnel within pertinent subject domain; develop, plan, coordinate, deliver, and/or evaluate training courses, methods, and techniques as appropriate.
  • "The concept of effective challenge is used to improve AI implementation at large financial services organizations in the US. An interpretation of an effective challenge is that, when building AI systems, one of the best ways to guarantee good results is to actively challenge and review each(...)
  • The discovery of electronic documents and data including e-mail, Web pages, word processing files, computer databases, and virtually anything that is stored on a computer. Technically, documents and data are “electronic” if they exist in a medium that can only be read through the use of(...)
  • Commonly referred to as “e-mail”, an electronic mail message is a document created or received via an electronic mail system, including brief notes, formal or substantive narrative documents, and any attachments, such as word processing and other electronic documents, which may be transmitted(...)
  • Information recorded in a form that requires a computer or other machine to process it and that otherwise satisfies the definition of a record. 
  • Definition: Any mark in electronic form associated with an electronic document, applied with the intent to sign the document.Related Term(s): digital signature
  • "An embedding is a representation of a topological object, manifold, graph, field, etc. in a certain space in such a way that its connectivity or algebraic properties are preserved. For example, a field embedding preserves the algebraic structure of plus and times, an embedding of a(...)
  • ""
  • "The use of a data processing system to imitate another data processing system, so that the imitating system accepts the same data, executes the same programs, and achieves the same results as the imitated system."
  • Definition: To convert plaintext to ciphertext by means of a cryptographic system.Synonym(s): encode, encrypt
  • Definition: To convert plaintext to ciphertext by means of a code.Synonym(s): encipher, encrypt
  • Definition: The generic term encompassing encipher and encode.Synonym(s): encipher, encode
  • Definition: The process of transforming plaintext into ciphertext. Converting data into a form that cannot be easily understood by unauthorized people.Synonym(s): encode, encrypt, encipher
  • A procedure that renders the contents of a message or file unintelligible to anyone not authorized to read it.
  • "An activity, task, or output that describes or defines the conclusion of a process."