CT-SEC: Certified Tester Security Tester

Structural testing examines a component’s internal code and implementation. It can reveal deliberately inserted malicious code, including code introduced by an internal employee or contractor. The ISTQB Security Tester syllabus specifically identifies this as a vulnerability that can be detected and corrected through structural testing.

The requirements stage establishes and analyzes functional and nonfunctional requirements, including security requirements derived from user needs and user stories. Identifying these needs early ensures that security constraints guide later design and development work.

A properly designed test environment must be restorable — capable of being returned to a known, consistent baseline state after each test run or between test cycles — so that subsequent tests, including regression checks and defect-fix verification, start from reproducible conditions. When an environment lacks a reliable mechanism (such as snapshots, backups, or a reset procedure) to revert configuration and data changes introduced during testing, results become inconsistent and defects become hard to reproduce or confirm as fixed, which is precisely the gap the restorable attribute is meant to cover.

Authorization testing verifies that users can access only the functions permitted by their assigned roles. Confirming that a non-admin user cannot access an administrator-only user-editing endpoint tests enforcement of role-based authorization and prevents vertical privilege escalation.

Social engineering uses impersonation and deceptive communications to manipulate people into disclosing sensitive information. Posing as an executive through email and contacting targets through social media, instant messaging, and SMS are common social-engineering tactics.