Quick Answer
The answer is separation of duties, the security principle that ensures no single individual can both initiate and approve a financial transaction. This control directly reduces the risk of fraud by requiring collusion between two or more people to bypass the system, as conflicting responsibilities are split across distinct roles. On the ISC2 Certified in Cybersecurity CC exam, this concept tests your understanding of internal controls and dual control mechanisms, often appearing in scenario-based questions about financial systems or sensitive operations. A common trap is confusing it with least privilege, but remember: least privilege limits access rights, while separation of duties divides tasks to prevent conflicts of interest. For a quick memory tip, think “two keys to unlock the vault”—initiation and approval must come from separate hands.
This CC practice question tests your understanding of security principles. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization is implementing a new system that processes financial transactions. To reduce the risk of fraud, they ensure that no single individual can both initiate and approve a transaction. Which security principle is this?
Need to know
Why wrong: Need to know restricts information access.
Separation of duties
Correct. Initiation and approval are separate duties.
Accountability
Why wrong: Accountability is about tracing actions to individuals.
Least privilege
Why wrong: Least privilege is about minimal access, not task separation.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Separation of duties
Separation of duties (SoD) is the security principle that prevents a single individual from having conflicting responsibilities, such as both initiating and approving a financial transaction. By splitting these tasks across different roles, the organization reduces the risk of fraud or error because collusion would be required to bypass controls. This is a core internal control mechanism in financial systems and aligns with the principle of dual control.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Need to know
Why it's wrong here
Need to know restricts information access.
Separation of duties
Why this is correct
Correct. Initiation and approval are separate duties.
Related concept
Read the scenario before looking for a memorised answer.
Accountability
Why it's wrong here
Accountability is about tracing actions to individuals.
Least privilege
Why it's wrong here
Least privilege is about minimal access, not task separation.
Common exam traps
ISC2 often tests the distinction between 'separation of duties' and 'least privilege' by presenting a scenario where a user has too many permissions, tempting candidates to choose least privilege, but the core issue is the conflict of having both initiation and approval authority, not the amount of access.
Detailed technical explanation
Under the hood, separation of duties is often enforced through role-based access control (RBAC) with mutually exclusive roles, where a user cannot be assigned both the 'transaction initiator' and 'transaction approver' roles. In real-world financial systems like SAP or Oracle E-Business Suite, this is implemented via authorization objects that check for role conflicts at runtime, preventing a single user from executing both steps even if they have the technical permissions. This principle is also codified in standards like SOX (Sarbanes-Oxley Act) for publicly traded companies.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
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FAQ
Security Principles — This question tests Security Principles — Read the scenario before looking for a memorised answer..
The correct answer is: Separation of duties — Separation of duties (SoD) is the security principle that prevents a single individual from having conflicting responsibilities, such as both initiating and approving a financial transaction. By splitting these tasks across different roles, the organization reduces the risk of fraud or error because collusion would be required to bypass controls. This is a core internal control mechanism in financial systems and aligns with the principle of dual control.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.
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