The Three Lines of Defense - Office of Internal Audit (2024)

The Three Lines of Defense - Office of Internal Audit (1)

The three lines of defense model provides guidance for effective risk management and governance. Each of the three lines plays a distinct role with the University’s control environment.

First Line of Defense – Management

The first line of defense lies with the business and process owners. Operational management is responsible for maintaining effective internal controls and for executing risk and control procedures on a day-to-day basis. This consists of identifying and assessing controls and mitigating risks. Additionally, business and process owners guide the development and implementation of internal policies and procedures and ensure activities are consistent with University goals and objectives. Mid-level managers may design and implement detailed procedures that serve as controls and supervise execution of those procedures by their employees.

Second Line of Defense – Risk Management and Compliance

The second line supports management to help ensure risk and controls are effectively managed. Management establishes various risk management and compliance functions to help build and/or monitor the first line-of-defense controls. Typical functions in this second line of defense include:

  • “A risk management function (and/or committee) that facilitates and monitors the implementation of effective risk management practices by operational management and assists risk owners in defining the target risk exposure and reporting adequate risk-related information throughout the organization.
  • A compliance function to monitor various specific risks such as noncompliance with applicable laws and regulations. In this capacity, the separate function reports directly to senior management.
  • A controllership function that monitors financial risks and financial reporting issues.”

Management establishes these functions to ensure the first line of defense is properly designed, in place, and operating as intended. The second line of defense serves an important purpose but because of their management function, they cannot be completely independent.

Third Line of Defense – Internal Audit

The third line of defense provides assurance to senior management and the board that the first and second lines’ efforts are consistent with expectations. The main difference between this third line of defense and the first two lines is its high level of organizational independence and objectivity. Internal Audit may not direct or implement processes, but they can provide advice and recommendations regarding processes. Additionally, Internal Audit may support enterprise risk management but may not implement or perform risk management other than inside of its own function. Internal auditors accomplish their objectives by bringing a systematic approach to evaluating and improving the effectiveness of risk management, control, and governance processes.

External Auditors

External auditors are responsible for expressing an opinion on the fairness (accuracy within a degree of materiality) of the financial statements in conformity with certain accounting standards. Additionally, external auditors may provide assurance to the Board of Trustees regarding institutional compliance requirements (such as Title IV funding of financial aid).

For additional information regarding the Three Lines of Defense, see IIA Position Paper: The Three Lines of Defense in Effective Risk Management and Control (PDF).

References:

COSO’s Take on the Three Lines of Defense

Leveraging COSO across the Three Lines of Defense, July 2015

The Three Lines of Defense - Office of Internal Audit (2024)

FAQs

The Three Lines of Defense - Office of Internal Audit? ›

These are three lines of defense, the first being outer barriers like skin, the second being non-specific immune cells like macrophages and dendritic cells, and the third line of defense being the specific immune system made of lymphocytes like B- and T-cells, which are activated mostly by dendritic cells, which ...

What are the three lines of defense in internal audit? ›

  • First line roles: Provision of. products/services. to clients; managing risk.
  • Second line roles: Expertise, support, monitoring and. challenge on. risk-related matters.
  • Third line roles: Independent and. objective assurance. and advice on all. matters related to.

What is the 1st, 2nd, and 3rd line of defense? ›

These are three lines of defense, the first being outer barriers like skin, the second being non-specific immune cells like macrophages and dendritic cells, and the third line of defense being the specific immune system made of lymphocytes like B- and T-cells, which are activated mostly by dendritic cells, which ...

Is 3 Lines of Defence outdated? ›

Critics say the approach is oversimplified, outdated, no longer a good representation of how companies should assign risk management responsibilities and ignores the role culture can play. Risk, they argue, is not just a matter for defence and the approach does not recognize the risk reward balance.

Are the three lines of defense in effective risk management and control? ›

In the Three Lines of Defense model, management control is the first line of defense in risk management, the various risk control and compliance over- sight functions established by management are the second line of defense, and independent assurance is the third.

What are the 3 lines of defense summary? ›

Defined by the Institute of Internal Auditors (IIA), the model is based on the idea that these three lines of defense work together to provide structure around risk management and internal governance. The model clearly defines roles including oversight by a governing body, senior management and independent assurance.

What are the three lines of defense or Defence? ›

First line of defense: Owns and manages risks/risk owners/managers. Second line of defense: Oversees risks/risk control and compliance. Third line of defense: Provides independent assurance/risk assurance.

What is an example of the second line of defense? ›

13.2: Second Line Defenses: Cells and Fluids
  • Hematopoiesis.
  • Granulocytes. Neutrophils (PMNs) Eosinophils. Basophils. Mast Cells.
  • Agranulocytes. Natural Killer Cells. Monocytes.
Mar 5, 2021

What is the second line of three lines of defense? ›

Current-state challenges with 3LOD

Second line: The second-line function enables the identification of emerging risks in daily operation of the business. It does this by providing compliance and oversight in the form of frameworks, policies, tools, and techniques to support risk and compliance management.

What is the second line of defense simple? ›

Second line of defense

These white blood cells, called phagocytes engulf and destroy bacteria. The area often becomes red, swollen, and painful during an inflammatory response. When a pathogen has invaded, the immune system may also release chemicals that increase body temperature, producing a fever.

What is the alternative to three lines of Defence? ›

The model that I would suggest we use to replace the Three Lines of Defence model is the RACI framework – Responsible, Accountable, Consult and Inform.

Who created the three lines of defense? ›

Background to 3LOD

In January 2013, the Three Lines of Defence model was published by the Institute of Internal Auditors.

What are the advantages of the three lines of defense? ›

Benefits of the Three Lines of Defense Model

The framework was designed to bring clarity to the issue of risk management, making it 'simple, easy to communicate, and easy to understand. ' It aims to ensure no gaps, overlaps or ambiguities in organizations' risk management and control activities.

Is internal audit the third line of defense? ›

Third Line of Defense – Internal Audit

The main difference between this third line of defense and the first two lines is its high level of organizational independence and objectivity. Internal Audit may not direct or implement processes, but they can provide advice and recommendations regarding processes.

What is an example of the third line of defense? ›

Third Line of Defense
  • The final line of defence against infection are the lymphocytes that produce antibodies to specific antigenic fragments.
  • Each B cell produces a specific antibody, and the body has millions of different B cells capable of detecting distinct antigens.

What is coso and why is it important? ›

The COSO framework outlines requirements for an effective internal fraud control system, including the presence and proper functioning of all five principles, their integration into an overall system, preparation for external circ*mstances affecting objectives, compliance with regulations and laws, and adherence to ...

What is the 1st, 2nd, and 3rd line of defense in banking? ›

Implementing the Three Lines of Defense model involves several key steps: Establish Clear Roles and Responsibilities: Define and communicate the roles of each line – operational management (1st line), risk management/compliance (2nd line), and internal audit (3rd line).

What are the three phases of internal audit? ›

The process employed by the Office of Internal Audit in performing audits follows three general phases comprising planning, fieldwork, and reporting. The following illustration documents the processes typically employed in the performance of an internal audit.

What is the line of defense 1a and 1b? ›

This, in reality, creates four lines of defense, where line 1a usually refers to the actual control owner (i.e., the manager or supervisor), while 1b refers to people within the organization who aren't necessarily responsible for control but work in a team or function that has enterprise risk management as one of its ...

What are the three core ethics of internal auditors? ›

Internal auditors are expected to apply and uphold the following principles:
  • • Integrity.
  • Objectivity.
  • Confidentiality.
  • Competency.

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