OSACO Group

Audit and Review Services

Identify, Prevent and Manage Organisational Risk

The effectiveness of your organisation relies on your processes, policies and - most of all - your people. A weak link can undermine not just profitability, but integrity, effectiveness and reputation.

Preparation and prevention are the best ways to protect your people, performance and reputation from corruption, ineptitude or simply inefficient practices. Strong, audited compliance and integrity frameworks also provide assurance to your key stakeholders.

OSACO’s extensive audit services can help you to identify and assess potential risks, and plan to avoid them. Our independent and objective review support can also help you to minimise, mitigate and manage impacts when risk has become reality.

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Ready to minimise and manage your organisational risk?

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Why OSACO?

We are specialists in identifying and managing the human risk factor and anticipating misconduct, and have honed this expertise in diverse developing, post-conflict and humanitarian environments.

We offer investigations and training support, with particular focus on governance, safeguarding and anti-corruption, to the not-for-profit, public and private sectors worldwide. Our investigators and trainers have real-world knowledge of the ways in which suboptimal oversight and compliance compromises organisational integrity and effectiveness.

Our Audit and Review Services

  • Financial, Operational and Compliance Audits
  • Governance, Risk Management and Compliance (GRC) Audits
  • Business Continuity and Disaster Recovery Audits
  • Procurement and Contract Audits
  • Programme and Project Audits
  • ESG and Sustainability Audits
  • Data / Information Security and Knowledge Management Audits
  • Stakeholder Engagement and Communication Audits
  • Sanctions Compliance Audits (e.g., adherence to OFAC, EU sanctions regimes)
  • Cybersecurity and Digital Forensic Audits (this can reflect both the regulatory (e.g. GDPR, data breach investigations) and the technical (e.g. log analysis, forensic imaging) aspects
  • Third-Party Risk Audits (essential for preventing third-party corruption risks)
  • Whistleblower Protection Mechanism Audits (undertaken with confidentiality assurance mechanisms and retaliation safeguards, and/or alignment with applicable international standards).

Additional services

  • Capacity-Building and Training for in-house auditing
  • Audit Methodology Development
  • Evaluation of Corporate Sustainability Initiatives
  • Understanding of Sustainability Reporting frameworks (GRI, SASB, TCFD)
  • ESG Risk Assessments
  • Safeguarding Due Diligence Assessments
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Ready for an independent assessment of your risk landscape?

How We Work

OSACO delivers actionable assessments and support plans that mitigate, manage or prevent current and future organisational risk.

  1. Anticipate: Identify vulnerabilities across governance, finance, procurement, data and/or people processes.
  2. Detect: Use forensic and analytical methods to surface anomalies and red flags.
  3. Respond: Provide objective findings and a clear remediation roadmap that reduces recurrence risk.
Proven Expertise
  • We have delivered thorough, transparent, and actionable audits in complex multi-country environments. Our expertise encompasses due diligence, forensic accounting, and financial system reviews and comprehensive audits to ensure compliance with internal controls, AML/CFT regulations and international standards.
  • Our audit and review expertise covers a range of subject areas, from safeguarding and ESG through to financial fraud and data security.
  • This expertise helps organisations align with international standards, ensuring robust compliance frameworks and providing assurance to clients and key stakeholders.
Global Standards

Our audit procedures are aligned with international standards such as IFRS (International Financial Reporting Standards), IPSAS (International Public Sector Accounting Standards), and COSO Internal Control Framework.

We are qualified to conduct ISO 19600 Compliance Management System and ISO 37001 Anti-Bribery Management System audits, plus pre-certification gap analyses.

We align with international standards and regulatory demands internationally recognised audit, confidentiality and legal standards and OSACO has developed a comprehensive Anti-Corruption Programme to strengthen Environmental, Social and Governance (ESG) ESG business models.

What You Can Expect
  • Quality and Excellence: Rigorous procedures aligned to international standards.
  • Partnership and Value: Collaborative delivery to meet your expectations.
  • Professional, Legal and Ethical Service: Adherence to professional audit confidentiality standards and, where applicable, legal privilege protections.

Our Experts:

Andrea de Tommaso — Senior Consultant

Andrea is an expert in fraud and corruption, having acquired extensive experience with the Italian Financial Police. He spearheaded complex investigations, collaborated with international law enforcement agencies and contributed to the dismantling of international mafia-style organised crime networks.

Andrea’s operational expertise is underpinned by multiple advanced degrees and specialised certifications, including qualifications related to fraud and corruption prevention, detection and investigation.

At OSACO, Andrea leads complex investigations into fraud and corruption, ensuring compliance with global standards, and he has trained and mentored hundreds of investigators worldwide.

Alfred Zebi — Senior Lawyer

A senior lawyer with a degree from Université Paris 1 Panthéon-Sorbonne, Alfred has extensive experience in both the humanitarian and corporate sectors. He has held senior legal positions with the African Development Bank (AfDB) and UNDP, where he honed his expertise in legal compliance and complex investigations.

At OSACO, Alfred has led high-stakes investigations for UN agencies, INGOs and corporate clients in Africa, specialising in fraud, corruption and bribery, particularly in procurement-related matters.

Alfred is also an internationally recognised specialist in safeguarding in workplaces and sport environments.

Abdoul Soumahoro — Audit Specialist

Abdoul is a seasoned financial professional who has worked internationally across various sectors delivering risk assessments, fraud detection and capacity-building services that enhance financial management systems and operational effectiveness.

With over 15 years of experience as an Audit Manager and Audit Partner, Abdoul has undertaken forensic investigations, internal control reviews, compliance assessments, systems and SOPs reviews, and procurement reviews, developed diagnostic tools for financial systems and implemented advanced accounting software.

Frequently Asked Questions:

What kinds of organisations do you work with?
Can audits be tailored to our industry and risk profile?
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