Vetting is a critical component of organisational security, yet many of the most significant risks continue to originate through people. Insider access, behavioural exposure and insufficient vetting create pathways for compromise that are often overlooked until an issue arises.
This paper outlines the key learnings for corporates around vetting, due diligence and insider risk, and explores the implications for organisations. It highlights the importance of not relying on basic screening but taking a risk cased approach to provide an integrated, intelligence led approach to understanding who you trust within your organisation.
The Shift in Risk: From Systems to People
Traditional security models have focused on protecting systems, networks and physical assets. While these remain important, the threat landscape has evolved. Increasingly, risk sits with individuals who have legitimate access to information, systems and environments.
In many cases, compromise does not begin with a technical breach. It begins with a person. This may involve the misuse of access, exposure through behaviour, or external profiling by hostile actors. Individuals can be identified, assessed and targeted long before any incident takes place, often using publicly available information and patterns of activity. Human failure can impose significant cost and reputation damage to organisations.
As a result, understanding your people is no longer a supporting function. It is a core component of organisational security.
Vetting as a Strategic Control
For many organisations, vetting is still treated as a compliance driven process completed at the point of hire. While this may satisfy baseline requirements, it does little to address the broader risk landscape.
Effective vetting should be viewed as a strategic control. It establishes trust at the outset, provides a defensible record of decision making, and creates an opportunity to identify and avoid prevent potential risks early. More importantly, it sets the foundation for how an organisation understands and manages its people over time.
Not all roles carry the same level of risk, and applying a uniform approach to screening can create blind spots. Roles involving access to sensitive information, financial control, client confidentiality or operational systems require a more considered and proportionate approach. BPSS and BS7858 vetting provide structured frameworks, but they should be applied in a way that reflects the level of access and exposure associated with each role.
Key Learnings for Corporates
One of the consistent failings of organisations is not distinguishing between collecting information and verifying it. Gathering data from candidates is straightforward, but without independent validation it provides limited assurance. Robust vetting requires confirmation of the detail provided to ensure it is both accurate and defensible.
Another important learning is that insider risk is not always malicious and often arises unintentionally through behaviour, lack of awareness or external influence. Employees may expose information without recognising its value or become vulnerable to manipulation over time. This reinforces the need for periodic review and re-vetting, particularly in higher risk posts. An individual’s circumstances can change, whether through financial pressure, personal relationships, criminal convictions or changes in role and access. Treating vetting as a single point in time activity fails to account for this.
Finally, third parties continue to represent a significant and often underestimated risk. Contractors, suppliers and partners frequently have access to systems, sites and information, yet the level of scrutiny applied to them is often cursory. Extending vetting and due diligence principles to third parties is essential in maintaining a secure operating environment.
The Role of Due Diligence
Due diligence provides a deeper layer of understanding that goes beyond standard screening. It enables organisations to build a more complete picture of individuals which is important in higher risk or higher value roles.
This may involve examining background, reputation, external interests and associations in order to identify risks that would not be visible through standard checks alone. For senior hires, international roles or positions involving sensitive access, this level of insight can be critical.
Implications for Security Teams
The evolution of risk has clear implications for security teams. The traditional separation between security, HR and compliance is becoming less effective as the lines between insider risk, personal exposure and organisational security continue to blur.
Security teams need to take a more integrated and proactive approach. This includes working closely with HR and compliance functions to ensure consistent vetting standards, while also incorporating intelligence and behavioural insight into how risk is assessed and managed.
There is also a growing need to understand how individuals are viewed externally. Employees, executives and key personnel can be identified and profiled by hostile actors using open-source information and behavioural patterns. The threat of this from hostile nations has increased exponentially and the organisation s targeted are not always obvious. This means that security is no longer confined to internal controls. It must also consider how people are exposed and targeted beyond the organisation.
GSA Global Approach
At GSA Global, we support organisations in building structured, proportionate and intelligence led vetting programmes. Our approach combines BPSS and BS7858 aligned screening with enhanced due diligence and insider risk support, enabling organisations to apply the right level of assurance based on role and access.
We work with clients to verify candidate information accurately, support compliance requirements and strengthen overall resilience. Through our vetting platform and advisory capabilities, we provide a consistent and scalable approach that moves beyond compliance and towards informed decision making.
Conclusion
Knowing your people is fundamental to security. As threats continue to evolve, organisations must look beyond systems and processes and focus on a risk-based approach to vetting requirements.
Structured vetting, supported by due diligence and an understanding of insider risk, provides a critical layer of protection and reduces the risk of reputational damage. It enables organisations to reduce exposure, make better decisions and respond more effectively when circumstances change.
In an environment where trust is both essential and increasingly complex, the ability to assess, verify and understand your people will remain one of the most important controls available.
