Protecting your business from both insider and external fraud threats

March 14, 2024

Protecting your business from both insider and external fraud threats.

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By Christine Brunner, CPA, CFE, MAcc | Chief Executive Officer | Brunner Sierra Group

Fraud poses a significant and evolving threat to organizations across industries, capable of inflicting severe financial losses, damaging reputations, and undermining customer trust. This menace comes from both within and outside an organization, manifesting in various forms ranging from embezzlement, asset misappropriation, and financial statement fraud by insiders, to cyberattacks, phishing, and identity theft perpetrated by external actors.


The digital transformation of business processes, while offering efficiency and scalability, also broadens the attack surface for malicious entities, making organizations more susceptible to sophisticated fraud schemes. Moreover, insider threats are particularly insidious, as they exploit the access and knowledge of trusted employees to bypass security measures. In this context, the challenge for organizations is not only to defend against external adversaries but also to deter, detect, and respond to internal threats. Developing a comprehensive, multi-layered strategy that integrates technology, stringent processes, and a culture of integrity and vigilance is paramount for organizations aiming to safeguard their assets, reputation, and stakeholders against the looming shadow of fraud.


Protecting your organization from both insider and external fraud threats involves implementing a comprehensive strategy that includes technology, processes, and people. Here's a structured approach to mitigate these risks:

Establish Strong Internal Controls

  • Segregation of Duties: Divide responsibilities among different employees to ensure checks and balances. No single individual should have control over all aspects of any financial transaction.
  • Access Controls: Limit access to systems and information strictly to those who need it to perform their job functions. Use role-based access controls and regularly review access permissions.
  • Regular Audits and Reviews: Conduct regular internal and external audits to examine and verify financial and operational processes. Surprise audits can be particularly effective in detecting fraud.

Implement Advanced Security Technologies

  • Fraud Detection Software: Utilize software that can monitor and analyze behavioral patterns to detect unusual transactions or activities that may indicate fraud.
  • Encryption and Data Protection: Protect sensitive data with encryption both at rest and in transit. Implement data loss prevention (DLP) tools to prevent unauthorized access or transmission of sensitive information.
  • Multi-Factor Authentication (MFA): Require MFA for accessing systems and data, making it harder for unauthorized users to gain access even if they have a password.
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Educate and Train Employees

  • Awareness Programs: Conduct regular training sessions to make employees aware of potential fraud schemes and how they might inadvertently contribute to them. Educate them on the importance of protecting sensitive information.
  • Whistleblower Policies: Encourage employees to report suspicious activities without fear of retaliation. Ensure there are secure, confidential channels for reporting concerns.

Monitor and Manage Third-Party Risks

  • Due Diligence: Conduct thorough due diligence on third parties (vendors, contractors, partners) before engaging in business relationships. Assess their security practices and compliance with relevant regulations.
  • Regular Assessments: Regularly review and assess the security and performance of third-party providers to ensure they meet contractual obligations and security standards.

Develop a Comprehensive Incident Response Plan

  • Preparation: Have a plan in place for responding to both internal and external fraud incidents. This plan should include steps for investigation, communication (both internal and external), and legal actions if necessary.
  • Testing and Simulation: Regularly test the incident response plan through simulations to ensure that your team is prepared to act quickly and effectively in the event of fraud.

Stay Informed About Emerging Threats

  • Continuous Learning: Keep abreast of new and evolving fraud schemes by participating in industry forums, subscribing to security bulletins, and attending relevant conferences.
  • Adjust and Evolve: Regularly review and update your security measures and fraud prevention strategies to adapt to new threats.

By implementing a layered and proactive approach that covers technology, processes, and education, organizations can significantly reduce their risk of both insider and external fraud. Regularly reviewing and updating your strategies and controls in response to evolving threats is crucial for ongoing protection.