Insider Threat

Insider Threat: Security risk posed by employees, service providers, or other individuals with legitimate access. The term describes an attack methodAttack MethodA defined way in which an attacker attempts to compromise a target or achieve an objective., malicious component, or threat scenarioThreat ScenarioA plausible sequence of events describing how a threat could affect an organization or system.. Protection requires a combination of preventionPreventionMeasures intended to stop security incidents or attacks before they occur., detectionDetectionThe capability to identify suspicious activity, attacks, or policy violations in time., containmentContainmentActions that limit the scope, spread, and impact of an active security incident., recoveryRecoveryThe controlled restoration of systems, data, and business services after a disruption., and awareness-raising.

How it works and where it fits

Insider Threat structures knowledge about potential adversaries, their objectives, capabilities, infrastructure, and observed behavior. Individual indicators are short-lived and easy to change, while behavioral patterns and technical relationships often have greater analytical value. Reporting should distinguish observed facts, assessments, and assumptions.

Practical security relevance

Practical use depends on source quality, timeliness, and relevance to the organization’s own attack surface. Information is prioritized, correlated with internal data, and converted into searches, detections, or safeguards. Investigation feedback continuously improves the assessment. Confidentiality and permitted sharing are as important as technical exchange formats.

Related concepts

• Cyber Threat IntelligenceCyber Threat IntelligenceProcessed information regarding threat actors, tactics, indicators, and risks.: Processed information regarding threat actors, tactics, indicators, and risks.
• Risk AssessmentRisk AssessmentIdentifies, analyzes, and assesses threats, vulnerabilities, and impacts.: Identifies, analyzes, and assesses threats, vulnerabilities, and impacts.
• Threat ActorThreat ActorAn individual, group, or organization that intentionally carries out or supports cyberattacks.: An individual, group, or organization that intentionally carries out or supports cyberattacks.
• Threat ModelingThreat ModelingAnalyzes potential attackers, attack vectors, and protective measures during the design phase.: Analyzes potential attackers, attack vectors, and protective measures during the design phase.