Insider Threat
An insider threat is a security risk originating from individuals within an organization who misuse their authorized access intentionally or unintentionally.
“A security threat originating from within the organization, often by an authorized system user.”
(Definition reproduced from the ISTQB Glossary. Copyright belongs to ISTQB.)
View the complete ISTQB GlossaryWhat is Insider Threat?
Insider threats include employees, contractors, or partners whose actions compromise information security through malicious behavior, negligence, or human error.
Authorized access: Insiders already possess legitimate system access.
Intentional or accidental: Threats may result from malicious actions or mistakes.
Security testing: Access controls and monitoring help reduce insider risks.
Real World Example
A regulated product team is preparing a release where Insider threat appears in reviews, test design conversations, or defect triage rather than as an isolated glossary word.
The risk is that the team treats Insider threat as interchangeable with nearby ISTQB terms. That makes test scope blurry and can lead to weak evidence for the release decision.
The tester anchors the discussion in the official definition, asks where the concept appears in the product, and designs examples that show the difference between Insider threat and similar ideas.
The page becomes useful in practice because Insider threat is connected to a specific testing decision, not memorized as a detached definition.
Practice Questions
Question 1
Which statement BEST describes Insider threat in the context of ISTQB terminology?
Question 2
A tester needs to explain Insider threat to a non‑technical stakeholder. Which approach is MOST appropriate?
Test your knowledge with real ISTQB-style questions
You’ve learned Insider Threat. Test your understanding with topic-specific questions in our Mock Exams.