Skip to main content
Governance Authority
Category: Internal Controls

Preventive Controls

Also known as: Preventative Controls
Simply put

Preventive controls are measures put in place to stop problems, errors, or harmful events from happening in the first place, rather than detecting them after the fact. Examples include security mechanisms, tools, or practices designed to deter or mitigate undesired actions or events. In some regulated contexts, such as food safety, specific preventive controls are required measures.

Formal definition

Preventive controls are security mechanisms, tools, or practices intended to deter or mitigate undesired actions or events before they occur, distinguishing them from detective controls that identify issues after they arise. Their nature and specificity vary by domain: in information security they encompass access and security mechanisms, while in certain regulated regimes they are mandated measures. For example, under the U.S. FSMA Preventive Controls framework, a food safety plan must identify preventive controls, such as process controls, that significantly minimize or prevent identified hazards; there, preventive controls are required measures rather than voluntary practices. The applicable requirements, categories, and expected rigor depend on the governing framework, sector, and jurisdiction.

Why it matters

Preventive controls sit at the front line of a control environment because they are designed to stop errors, misconduct, or harmful events before they occur rather than surfacing them afterward. This ordering matters: a problem that never materializes generally imposes lower cost, less disruption, and less reputational exposure than one that must be detected, investigated, and remediated. For this reason, control frameworks typically treat preventive and detective controls as complementary layers, with preventive measures reducing the likelihood that a risk event happens and detective measures identifying issues that slip through.

The weight placed on preventive controls varies significantly by domain and by whether they are voluntary practices or mandated requirements. In information security, preventive controls generally take the form of access and security mechanisms intended to deter or mitigate undesired actions. In certain regulated regimes they are legal requirements rather than discretionary practices. For example, under the U.S. FSMA Preventive Controls framework, a food safety plan must identify preventive controls, such as process controls, that significantly minimize or prevent identified hazards. Whether an organization has any latitude in how it designs a preventive control depends entirely on the governing framework, sector, and jurisdiction.

Who it's relevant to

Chief Compliance and Risk Officers
These functions generally rely on preventive controls to reduce the likelihood of risk events across the enterprise. Where a governing framework mandates specific preventive measures, as under the FSMA Preventive Controls framework in the food safety context, compliance leaders must confirm that required controls are identified and in place, recognizing that obligations vary by sector and jurisdiction.
Internal Auditors and Assurance Functions
Auditors typically distinguish preventive controls from detective controls when assessing a control environment, since the two serve different purposes at different points in a risk event. Understanding whether a control is intended to deter an event before it occurs or to identify it afterward informs how assurance professionals scope their work and interpret gaps.
Operational Management
Management generally owns the design and operation of preventive controls, such as process controls comprising procedures and practices. In regulated regimes where preventive controls are required measures, management is responsible for implementing them to significantly minimize or prevent identified hazards within its area of accountability.
Information Security Practitioners
In information security, preventive controls encompass access and security mechanisms, tools, or practices intended to deter or mitigate undesired actions. Security professionals apply these measures as a first layer of defense, complemented by detective controls that identify issues that occur despite preventive measures.

Inside Preventive Controls

Definition and Purpose
Preventive controls are measures designed to deter or stop errors, fraud, or undesirable events from occurring in the first place, rather than identifying them after the fact. They act at the front end of a process to reduce the likelihood of a risk materializing.
Segregation of Duties
A common preventive control that divides responsibility for related tasks, such as authorizing, recording, and reconciling transactions, among different individuals to reduce the opportunity for a single person to commit and conceal an error or irregularity.
Authorization and Approval Requirements
Controls requiring that transactions or actions be reviewed and approved by an appropriate person before they proceed, helping ensure activity falls within delegated authority and policy limits.
Access Restrictions
Physical and logical access controls, such as passwords, user permissions, and restricted entry, that limit who can initiate, alter, or view sensitive information and assets before misuse can occur.
Policies, Standards, and Training
Documented rules and guidance, supported by training, that set expectations for conduct and process before activities are undertaken, aiming to reduce inadvertent errors and non-compliance.
Relationship to Detective and Corrective Controls
Preventive controls are typically deployed alongside detective controls (which identify issues that occur) and corrective controls (which remediate them), forming a layered approach; they are generally not relied upon in isolation.
Design Versus Operating Effectiveness
A preventive control must be both appropriately designed to address the targeted risk and operating effectively in practice; a well-designed control that is not consistently applied does not deliver the intended risk reduction.

Common questions

Answers to the questions practitioners most commonly ask about Preventive Controls.

Are preventive controls more important than detective controls?
Not inherently. Preventive controls aim to stop an error or irregularity before it occurs, while detective controls identify issues after they have happened; the two are generally treated as complementary rather than ranked. A control environment that relies solely on preventive measures may miss failures that slip through, and one relying only on detective measures may catch problems too late. Under most internal control frameworks, the appropriate mix depends on the risk being addressed, its likelihood and impact, and the cost of control. This is a matter of design judgment for management rather than a fixed hierarchy.
Does having preventive controls in place mean a risk has been eliminated?
No. A preventive control is intended to reduce the likelihood of a risk materializing, not to guarantee its elimination. Even well-designed preventive controls leave residual risk, because controls can be circumvented, overridden by management, or fail in operation. The existence of a control speaks to control design; whether it actually functions as intended over a period is a separate question of operating effectiveness. Characterizing a risk as fully removed generally overstates what any single control can achieve.
Who is responsible for designing and operating preventive controls?
In most organizational models, management owns the design, implementation, and day-to-day operation of preventive controls as part of the first line, with certain oversight or monitoring functions supporting the second line. The board and its committees generally hold an oversight role rather than an operational one, satisfying themselves that a control framework exists and functions, often informed by internal audit or other assurance providers. Responsibility should be defined against the specific entity's structure, as roles vary by organization, sector, and jurisdiction.
How can an organization assess whether a preventive control is working?
Assessment typically distinguishes control design from operating effectiveness. Evaluating design considers whether the control, if operating as intended, would prevent the targeted error or irregularity. Evaluating operating effectiveness considers whether the control actually functioned consistently over a relevant period, often through testing, sampling, or observation by an assurance function. The specific methods, sample sizes, and evidence standards depend on the risk, the framework applied, and professional judgment, so this description is educational rather than prescriptive.
What are common examples of preventive controls in practice?
Frequently cited examples include segregation of duties, authorization and approval requirements, access restrictions and system permissions, and validation checks that block invalid transactions before processing. Which controls are appropriate depends on the process, the associated risk, and the organization's environment. Selecting among them is a design decision for management informed by the relevant risk assessment; the examples here are illustrative and not a required or exhaustive set.
How do preventive controls relate to an organization's risk appetite?
Preventive controls are one means by which management can bring the residual risk of a process within the boundaries the board and management have set. Where inherent risk exceeds the stated appetite or tolerance, preventive controls may be designed or strengthened to reduce likelihood so that residual risk falls within acceptable limits. The calibration of controls against appetite involves cost, feasibility, and judgment, and the appropriate balance varies by entity and circumstance. This entry is educational and not a substitute for tailored risk, audit, or compliance advice.

Common misconceptions

Preventive controls eliminate risk entirely.
Preventive controls generally reduce the likelihood of an event but do not remove risk completely. Residual risk typically remains after controls operate, and no control set can guarantee prevention, particularly against collusion or management override.
Preventive controls are inherently superior to detective controls and can replace them.
The two serve different functions and are typically complementary. Preventive controls stop issues before they occur, while detective controls catch what gets through; a sound control environment usually relies on both rather than favoring one.
Because a preventive control is documented in policy, it is working.
Documentation reflects control design, not operating effectiveness. A control described on paper may not be performed consistently, may be circumvented, or may no longer fit the process, so its actual operation should be assessed rather than assumed.

Best practices

Map preventive controls to the specific risks they are intended to address, so that each control has a clear purpose and gaps or redundancies become visible.
Assess both design adequacy and operating effectiveness, rather than assuming that a documented control functions as intended in day-to-day practice.
Use preventive controls as part of a layered approach alongside detective and corrective controls, recognizing that residual risk generally remains after prevention.
Implement and periodically review segregation of duties and access restrictions to reduce opportunities for error, fraud, or management override.
Support controls with clear policies and training so that the people performing them understand expectations before activities are undertaken.
Clarify ownership, typically management owns the design and operation of preventive controls, while assurance functions provide independent evaluation and the board or relevant committee provides oversight.