Security needs a shared vocabulary.
Precise, source-bound definitions for secure communication, identity, cryptography and operational collaboration—with questions that turn terminology into testable controls.
Operational context
A controlled communication space for one operational objective, rather than a generic group chat.
Review definitionIncident communicationQuick definitionThe controlled exchange of situation, decisions and assignments during a security or operational incident.The controlled exchange of situation, decisions and assignments during a security or operational incident.
Review definitionFallback channelQuick definitionA pre-defined alternative communication path for failure or compromise of the primary channel.A pre-defined alternative communication path for failure or compromise of the primary channel.
Review definitionEvidence matrixQuick definitionA structured record separating expectation, observation, impact, reproducibility and decision.A structured record separating expectation, observation, impact, reproducibility and decision.
Review definitionIdentity & access
A session whose use is additionally bound to cryptographic material held by a specific device.
Review definitionPasskeyQuick definitionA phishing-resistant sign-in based on asymmetric cryptography and WebAuthn/FIDO principles.A phishing-resistant sign-in based on asymmetric cryptography and WebAuthn/FIDO principles.
Review definitionLeast privilegeQuick definitionThe principle of granting only the minimum rights needed for a purpose and duration.The principle of granting only the minimum rights needed for a purpose and duration.
Review definitionZero TrustQuick definitionAn architectural approach that does not grant implicit trust based on network location or ownership.An architectural approach that does not grant implicit trust based on network location or ownership.
Review definitionTrust transitionQuick definitionA security-relevant state change in which trust is re-established, constrained or revoked.A security-relevant state change in which trust is re-established, constrained or revoked.
Review definitionCryptography
Encryption designed so content is available in plaintext only at authorised endpoints.
Review definitionForward secrecyQuick definitionThe property that later key compromise does not expose earlier session keys.The property that later key compromise does not expose earlier session keys.
Review definitionPost-compromise securityQuick definitionA protocol's ability to recover a secure state after compromise.A protocol's ability to recover a secure state after compromise.
Review definitionSafety numberQuick definitionA comparison value derived from identity keys for independent verification of a peer.A comparison value derived from identity keys for independent verification of a peer.
Review definitionKey rotationQuick definitionThe controlled replacement of cryptographic keys based on time, event or risk.The controlled replacement of cryptographic keys based on time, event or risk.
Review definitionWeb & privacy
The deliberate reduction of collection, precision, linkability and retention of contextual data.
Review definitionProgressive web appQuick definitionA web application using installable, standalone and partly offline-capable app properties.A web application using installable, standalone and partly offline-capable app properties.
Review definitionWeb PushQuick definitionA browser standard for server-initiated notifications to registered web applications.A browser standard for server-initiated notifications to registered web applications.
Review definition