Best Practices in Third-Party Risk Management: Vendor Risk, Supplier Fraud Prevention, and Protecting Nigerian Organisations from Third-Party Exposure

Nigerian organisations operate within a web of third-party relationships. These relationships are essential for commercial success. They are also consequential for risk exposure.

Vendors, suppliers, contractors, agents, distributors, outsourced service providers, technology partners, and consultants collectively deliver enormous value to Nigerian businesses. They simultaneously represent one of the most significant, most consistently undermanaged, and most consequentially exploited sources of financial, operational, reputational, and compliance risk those businesses face every single day.

Third-party risk management is not a new discipline. But in Nigeria’s current operating environment, the adequacy of third-party risk management has moved from a governance aspiration to a strategic and regulatory imperative.

Let me walk you through what best-practice third-party risk management looks like for Nigerian organisations in 2026.

1. The third-party risk landscape in Nigeria: why the exposure is increasing

Before building effective solutions, Nigerian organisations need an honest and evidence-based assessment of the scale and nature of the third-party risks they actually face. And why those risks are intensifying rather than stabilising.

Third-party risks in Nigeria have grown significantly in both scale and complexity over the past five years. Several converging trends are driving this growth simultaneously.

The first is the acceleration of outsourcing. Nigerian organisations, particularly in financial services, telecoms, oil and gas, and the public sector, are outsourcing a growing proportion of their operations to third-party providers. Every outsourced function transfers not just the operational activity but also the associated risks to a party whose controls and governance the Nigerian organisation cannot directly manage from within its own perimeter.

The second trend is the growing sophistication of vendor-facilitated fraud. Nigerian fraudsters increasingly exploit third-party relationships as the vector through which organisational controls are circumvented. Fictitious vendors, inflated invoices, kickback arrangements between procurement staff and external suppliers, and Business Email Compromise schemes that impersonate legitimate vendors to redirect payments are all increasing in frequency, sophistication, and financial impact.

The third trend is the regulatory dimension. The CBN’s updated vendor risk management guidelines for banks, the NDPC’s requirements for data processor oversight, PENCOM’s third-party service provider guidelines, and the Bureau of Public Procurement’s enhanced vendor compliance requirements have collectively created a formal regulatory framework for third-party risk management in Nigeria.

The fourth trend is the reputational and commercial dimension. Nigerian organisations with international business relationships are subject to third-party risk management expectations that include formal third-party risk assessment requirements, supply chain integrity due diligence, and anti-corruption compliance verification.

Read our Guide to CBN Vendor Risk Management Guidelines 2026 for regulatory compliance insights.

2. Key definition: what is third-party risk management?

A clear and authoritative definition of third-party risk management is the essential conceptual foundation for designing and implementing a programme that is comprehensive, structured, and genuinely proportionate to the actual exposure.

Definition: Third-Party Risk Management (TPRM) is the structured process by which an organisation identifies, assesses, monitors, and mitigates the risks arising from its relationships with external parties, including vendors, suppliers, contractors, service providers, agents, and other business partners, that have access to the organisation’s systems, data, facilities, or financial resources, or whose performance, conduct, or financial condition could materially affect the organisation’s operational, financial, reputational, or compliance position.

TPRM encompasses the full lifecycle of the third-party relationship, from initial due diligence and onboarding through contract management, ongoing monitoring, and eventual offboarding. It applies a risk-based approach that allocates the greatest oversight effort to the third parties that represent the greatest potential exposure to the organisation.

Effective TPRM recognises a principle that is frequently misunderstood in Nigerian organisations: the risks associated with third parties do not diminish because they have been transferred outside the organisation. They remain the organisation’s risks to manage, and they are frequently amplified by the reduced visibility and direct control that characterises any relationship in which critical activities are performed by an external party.

Reference: This definition is adapted from the National Institute of Standards and Technology (NIST) — Cybersecurity Supply Chain Risk Management Practices for Systems and Organisations (NIST SP 800-161r1, 2022).

3. The most significant third-party risk categories for Nigerian organisations

Understanding the specific categories of third-party risk that are most prevalent and most financially damaging in the Nigerian context is the starting point for designing controls that address actual threats rather than theoretical ones.

3.1 Vendor fraud and procurement corruption

Vendor fraud, encompassing fictitious vendor payments, inflated invoicing, kickback arrangements, and bid rigging involving external suppliers, is the most financially damaging third-party risk category in Nigerian organisations. The ACFE consistently identifies procurement and vendor fraud among the highest-value fraud types globally, and the Nigerian experience is entirely consistent with this finding.

The distinctive Nigerian dimension is the frequency and sophistication of collusion between internal procurement or finance staff and external vendors. These arrangements involve the external vendor as an active, knowing participant in the fraud design, execution, and concealment.

3.2 Cybersecurity and technology third-party risk

Third-party technology partners, including IT service providers, cloud hosting companies, software vendors, systems integrators, and managed service providers, represent one of the most significant and most rapidly growing cybersecurity risk vectors for Nigerian organisations.

Cybercriminals increasingly target third parties that have simultaneous access to multiple organisations’ systems, recognising that compromising a single technology vendor can provide entry points into dozens of their Nigerian clients. The 2025 Interpol Africa Cyberthreat Assessment documented multiple instances in which Nigerian organisations were compromised through vulnerabilities in their third-party technology providers.

3.3 Regulatory and compliance third-party risk

Third parties whose conduct exposes the Nigerian organisation to regulatory sanction represent a distinct and increasingly important risk category. This includes data processors and IT vendors whose mishandling of personal data creates NDPC compliance liability, outsourced service providers in regulated financial services whose operational failures generate CBN regulatory findings, agents and distributors whose sales practices expose the principal to EFCC or SEC enforcement, and international business partners whose corruption or sanctions violations implicate their Nigerian counterparts.

3.4 Operational concentration risk

Excessive dependence on a single third-party provider for a critical operational function creates concentration risk. This is the risk that failure, financial distress, or unexpected exit of that provider causes material operational disruption to the Nigerian organisation.

This risk is particularly acute in IT infrastructure, where many Nigerian organisations have concentrated critical systems with a single provider without adequate business continuity or alternative supplier arrangements.

3.5 Reputational and ESG third-party risk

The conduct of third parties, including their labour practices, environmental record, anti-corruption compliance, and human rights performance, increasingly reflects on the Nigerian organisations that maintain business relationships with them.

International business partners, development finance institutions, and institutional investors are applying supply chain due diligence standards that hold Nigerian organisations accountable for the conduct of their vendors and suppliers to an extent that was uncommon in domestic-only business relationships even five years ago.

Our Vendor Risk Tiering and Due Diligence Programme Development helps organisations classify and assess third-party risks appropriately.

4. Best practice framework: the third-party risk management lifecycle

Best-practice TPRM is not a one-time due diligence exercise. It is a structured lifecycle process that manages third-party risk from initial identification through to relationship termination.

4.1 Third-party inventory and risk classification

Effective TPRM begins with a complete and actively maintained inventory of all third parties with which the organisation has a material relationship. This inventory must be comprehensive, capturing not just Tier-1 direct vendors but also, for organisations with significant supply chain risk exposure, the critical sub-contractors and fourth parties that support key vendor relationships.

Each third party in the inventory should be classified into a risk tier (high, medium, or low) based on a structured assessment of the nature and depth of the relationship, the criticality of the service or product provided, the access the third party has to the organisation’s systems, data, and facilities, and the regulatory sensitivity of the function involved.

4.2 Pre-onboarding due diligence

Before entering into any significant third-party relationship, Nigerian organisations should conduct structured due diligence proportionate to the risk tier assigned to the prospective third party.

For high-risk third parties, due diligence should encompass legal and regulatory compliance verification including CAC registration, FIRS tax compliance, and sector-specific licensing; financial health assessment including review of financial statements and bank references; ownership and beneficial interest verification to identify undisclosed conflicts of interest or politically exposed persons; operational capability assessment including site visits and reference checks; information security and data protection assessment for technology vendors; and anti-corruption and sanctions screening.

4.3 Contract and commercial protection

The contract between the Nigerian organisation and its third-party vendors is the primary legal mechanism through which third-party risks are allocated, mitigated, and enforced.

Contracts with material third parties should include clear specification of deliverables, quality standards, and performance measurement mechanisms; information security and data protection obligations; right-to-audit provisions enabling the Nigerian organisation or its designated auditors to assess vendor compliance; liability and indemnity provisions appropriate to the risk profile; step-in rights enabling the organisation to take operational control of critical services; termination provisions enabling exit from the relationship if vendor conduct deteriorates; and business continuity requirements specifying minimum resilience standards.

4.4 Ongoing monitoring and performance management

The due diligence conducted at onboarding provides a point-in-time assessment of third-party risk. The ongoing monitoring programme sustains that assessment throughout the life of the relationship.

Ongoing monitoring for high-risk third parties should encompass regular performance review against contracted service levels, periodic reassessment of financial health, continuous or periodic information security assessment for technology vendors, regular compliance verification against applicable regulatory requirements, and horizon scanning for adverse information including legal proceedings and regulatory actions.

4.5 Incident response and escalation

When a third-party incident occurs, whether a vendor security breach, a performance failure, a compliance violation, or a fraud event involving the third party, the Nigerian organisation must have a defined incident response process.

This process should specify who is notified of third-party incidents and at what thresholds, what initial containment and investigation steps are taken, how regulatory notification obligations are triggered and managed, how the commercial and legal relationship with the vendor is managed through the incident, and what remediation requirements are imposed on the vendor as a condition of continued engagement.

4.6 Offboarding and exit management

The termination of a third-party relationship carries its own risk management requirements. Offboarding processes should ensure the secure return or destruction of all organisational data held by the departing vendor, the revocation of all system access credentials and physical access rights, the transition of critical services to an alternative provider without operational disruption, the settlement of all commercial obligations, and the retention of all documentation from the relationship for legally required periods.

Check out Supplier Fraud Prevention Strategies for Nigerian Businesses for targeted controls.

5. Targeted controls for supplier fraud prevention in Nigerian organisations

Given that vendor and supplier fraud is the most financially damaging third-party risk category for Nigerian organisations, specific and targeted prevention controls deserve dedicated attention.

5.1 Vendor master file integrity controls

The vendor master file, the register of approved suppliers from which payments can be authorised and processed, is the primary control point for supplier fraud prevention. Its integrity depends on strict controls over who can add, modify, or deactivate vendor records; independent verification of vendor bank account details before onboarding and before any changes are processed; and regular reconciliation and cleansing of the master file.

5.2 Out-of-band payment verification for BEC prevention

Business Email Compromise targeting vendor payment processes has become the fastest-growing and most costly supplier fraud type in Nigeria. The most effective control is straightforward but must be consistently applied: a mandatory out-of-band verification requirement for all payment detail change requests. This requires direct telephone confirmation through a contact number independently obtained from the vendor, not from the email chain requesting the change.

5.3 Conflict of interest detection and management

Undisclosed financial interests connecting internal staff to external vendors, the foundation of most kickback and preferential treatment schemes, must be addressed through a combination of mandatory annual conflict of interest disclosures, point-of-decision declarations for all staff involved in vendor selection and payment approval, independent vendor due diligence designed to surface undisclosed connections, and data analytics that compare vendor ownership information against employee records.

5.4 Procurement data analytics

Regular data analytics on vendor and procurement transaction data provides a powerful detection mechanism for the patterns that characterise supplier fraud. Key analytics include spend concentration analysis identifying vendors representing disproportionate shares of category expenditure, invoice anomaly detection identifying duplicate invoices or unusual pricing, and payment timing analysis identifying unusual patterns suggesting rushed payment of fraudulent invoices.

6. Third-party risk management developments

The third-party risk landscape and the regulatory and operational context within which Nigerian organisations must manage it are evolving rapidly.

6.1 CBN’s strengthened outsourcing and vendor risk guidelines

The CBN issued significantly updated guidance on outsourcing and vendor risk management for Nigerian banks and other financial institutions in 2025. The updated guidelines require formal third-party risk appetite statements at board level, mandate structured risk tiering of all material third-party relationships, introduce specific requirements for fourth-party risk visibility, and establish minimum content standards for vendor contracts including right-to-audit provisions.

6.2 NDPC’s active data processor oversight enforcement

The Nigeria Data Protection Commission’s active enforcement activities in 2025 included specific and consequential scrutiny of how Nigerian organisations manage the data protection obligations of their third-party data processors. NDPC enforcement findings identified inadequate data processor due diligence and absent or deficient data processing agreements as among the most common compliance failures.

6.3 Supply chain cyberattacks targeting Nigerian organisations have escalated dramatically

The Interpol Africa Cyberthreat Assessment (2025) documented a dramatic increase in supply chain cyberattacks targeting Nigerian organisations, incidents in which attackers deliberately targeted technology vendors and IT service providers to gain access to their Nigerian clients’ systems. Several significant data breaches affecting Nigerian financial institutions in 2025 were traced to vulnerabilities in shared technology infrastructure.

6.4 ESG supply chain due diligence is now a commercial requirement

International business partners, development finance institutions, and multinational corporations operating in Nigeria are increasingly requiring their Nigerian suppliers and partners to demonstrate ESG-compliant supply chain practices, including evidence of labour rights compliance, anti-corruption programme implementation, environmental management practices, and human rights due diligence.

6.5 AI-powered vendor risk screening is transforming due diligence

In 2025, AI-powered vendor risk screening platforms became accessible to Nigerian mid-market organisations at commercially viable price points. Platforms now offer AI-driven screening capabilities that search thousands of regulatory databases, sanctions lists, adverse media sources, and corporate ownership registries simultaneously, generating comprehensive vendor risk profiles in minutes.

6.6 Fourth-party risk visibility is becoming a regulatory expectation

Nigerian financial regulators began explicitly referencing fourth-party risk, the risks arising from the sub-contractors and technology providers used by an organisation’s direct vendors, as a component of adequate TPRM programmes. Nigerian organisations are now expected to have at minimum a basic understanding of the critical fourth-party dependencies of their most important vendors.

Our Ongoing Vendor Monitoring Programme Design helps organisations maintain continuous oversight of third-party relationships.

7. Building a third-party risk management programme for Nigerian organisations

Transforming TPRM from an aspiration to an operational reality requires a structured, phased, and realistic implementation approach tailored to the Nigerian context.

The first phase is inventory and classification, building a complete, current inventory of all material third parties and applying a risk-based tiering methodology that determines the oversight level proportionate and appropriate for each relationship.

The second phase is gap assessment, evaluating the current state of due diligence, contracting, and monitoring practices against best practice and regulatory requirements, and developing a prioritised remediation roadmap that addresses the highest-risk gaps first.

The third phase is policy and framework development, establishing a board-approved TPRM policy, a risk-tiered due diligence framework, standard contract provisions for material vendor relationships, and an ongoing monitoring methodology aligned with the risk tier of each vendor category.

The fourth phase is implementation and capacity building, operationalising the framework through staff training, technology tool implementation, and establishment of the governance reporting mechanism that keeps the board and management informed.

The fifth and ongoing phase is continuous improvement, updating the TPRM programme as the third-party landscape evolves, regulatory requirements develop, and incident experience reveals opportunities for framework strengthening. TPRM is a continuous governance discipline, not a one-time implementation project.

8. The bottom line

Nigerian organisations depend on their vendors, suppliers, and third-party partners for operational continuity, commercial competitiveness, and strategic growth. Yet for a significant proportion of these organisations, the third-party relationships that are most critical to their business are also the least rigorously governed.

This creates fraud exposures, cybersecurity vulnerabilities, regulatory risks, and operational dependencies that remain unmapped, unassessed, and unmitigated until a failure forces them into visibility.

The financial, reputational, and regulatory cost of third-party risk failures in Nigeria is measured in billions of naira every year. The cost of building and maintaining a structured, risk-based TPRM programme that prevents the majority of these failures is a fraction of that figure.

Every significant third-party relationship your organisation maintains is either being managed or being left to chance. The question is not whether you can afford to manage these risks properly. It is whether you can afford not to.

Related services from Business Cardinal

Third-Party Risk Management Framework Design and Implementation – Structured programmes for vendor and supplier risk oversight.
Vendor Risk Tiering and Due Diligence Programme Development – Risk classification and assessment methodologies.
Ongoing Vendor Monitoring Programme Design – Continuous oversight of third-party relationships.

Let’s work together

Every significant third-party relationship your organisation maintains is either being managed or being left to chance. Let Business Cardinal help you ensure it is managed, properly, consistently, and with the rigour that protecting your organisation genuinely requires.

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References

National Institute of Standards and Technology (NIST). Cybersecurity Supply Chain Risk Management Practices (SP 800-161r1, 2022). Available at: https://csrc.nist.gov/publications/detail/sp/800-161/rev-1/final
Central Bank of Nigeria. Outsourcing and Vendor Risk Management Guidelines for Financial Institutions (2025). Available at: https://www.cbn.gov.ng
Nigeria Data Protection Commission. NDPR Compliance and Data Processor Oversight Requirements (2025). Available at: https://www.ndpc.gov.ng
Association of Certified Fraud Examiners (ACFE). 2024 Report to the Nations on Occupational Fraud and Abuse. Available at: https://www.acfe.com/report-to-the-nations
Interpol. Africa Cyberthreat Assessment Report (2025). Available at: https://www.interpol.int/en/Crimes/Cybercrime
Bureau of Public Procurement Nigeria. Vendor Compliance and Procurement Integrity Guidelines (2025). Available at: https://www.bpp.gov.ng
Financial Reporting Council of Nigeria. Corporate Governance Code (2025 update). Available at: https://www.financialreportingcouncil.gov.ng
Institute of Risk Management (IRM). Third-Party Risk Management Guidance. Available at: https://www.theirm.org
Chartered Institute of Procurement and Supply (CIPS). Supply Chain Risk and Supplier Due Diligence. Available at: https://www.cips.org
Transparency International. Third-Party Anti-Corruption Due Diligence Guidance. Available at: https://www.transparency.org