Non-Human Identity Governance and Risk: the hidden threat in your digital ecosystem

For years, Identity and Access Management (IAM) has focused on protecting human credentials through multi-factor authentication (MFA), strong password policies, and role-based access controls (RBAC). However, the rapid adoption of microservices, CI/CD pipelines, and cloud automation has fundamentally transformed the corporate cybersecurity landscape.

Today, non-human identities (NHIs)—including API tokens, service accounts, and digital certificates—far outnumber human users, creating a new, often invisible attack surface. Without proper lifecycle governance, forgotten credentials embedded throughout the software supply chain can become a silent yet powerful attack vector for cybercriminals.

The paradigm shift: the explosive growth of non-human identities

For years, Identity and Access Management (IAM) strategies have focused on securing human identities. Organizations have implemented multi-factor authentication (MFA), complex password policies, and role-based access control (RBAC) to ensure that only authorized personnel can access corporate information.

However, today’s digital ecosystems operate under a radically different model. The widespread adoption of microservices, CI/CD pipelines, no-code automation, and extensive SaaS integrations has led to non-human identities (NHIs) significantly outnumbering human identities, with an average ratio of 45 to 1.

These non-human identities include:

• API Tokens and Secrets: Used to connect third-party SaaS services with internal systems, applications, and repositories.
• Service Accounts: Credentials and permissions assigned to scripts, bots, and cloud workloads that need to interact with systems without human intervention.
• OAuth Tokens and Digital Certificates: Used to establish and maintain delegated access between integrated platforms and services.

Unlike human users, these credentials often lack expiration dates, are not protected by interactive security controls such as MFA, and may be created by developers or external vendors without oversight from centralized security or Governance, Risk, and Compliance (GRC) teams.

As a result, NHIs can accumulate excessive permissions, remain active long after their original purpose has disappeared, and create security blind spots that are difficult to detect through traditional identity management practices.

The silent attack vector in the software supply chain

The greatest risk posed by NHIs lies not only in their growing presence within an organization’s own infrastructure, but also in how they are managed across third-party vendors, service providers, and business partners.

Consider a common scenario in today’s interconnected supply chain:

1. Delegated access through third-party integrations

An organization engages an external data analytics provider or marketing software vendor. To deliver its services, the provider requires an API token or service credential that grants direct access to a corporate database, cloud storage environment, or internal application.

2. Missing lifecycle governance

Months later, the project ends or the provider updates its codebase. Yet the original credential remains active, potentially retaining excessive permissions and lacking a configured expiration date.

3. Exposure beyond the corporate perimeter

The provider experiences a secondary security breach, misconfigures a container, or accidentally exposes source code in a public or private repository. The API token is compromised as a result.

4. Direct, hard-to-detect access

An attacker discovers the exposed credential and uses it to authenticate directly against the organization’s infrastructure. Traditional security defenses may interpret the resulting activity as legitimate because it originates from an authorized credential and does not trigger an MFA challenge.

This type of vulnerability allows cybercriminals to bypass traditional perimeter defenses and identity controls, creating a seemingly legitimate and difficult-to-detect entry point into critical corporate assets.

The result is a security gap that can remain open long after the original integration has ceased to serve a business purpose.

Human vs. Non-Human Identities: Understanding the risk

The differences between human and non-human identities have important implications for security governance, particularly as organizations become increasingly dependent on automation, cloud infrastructure, and third-party integrations.

Volume and scalability. Human identities typically number in the hundreds or thousands within an organization. Non-human identities, by contrast, can reach tens or even hundreds of thousands, making them significantly more challenging to inventory, monitor, and manage effectively.

Security controls. Human users are generally protected by established security measures such as multi-factor authentication (MFA), single sign-on (SSO), password policies, and role-based access controls. Non-human identities often rely on static keys, API tokens, service credentials, and digital certificates that may lack automated rotation, expiration policies, or equivalent protective controls.

Lifecycle management. Human identities are usually managed through structured HR processes covering onboarding, role changes, and offboarding. Non-human identities often lack the same level of oversight. Credentials can remain active long after a project ends, a service is decommissioned, or a third-party relationship changes, creating persistent access risks that are difficult to detect.

Third-party exposure. Although human identities also present risks when external access is involved, non-human identities can create particularly difficult security challenges. A compromised vendor credential may provide direct, persistent access to corporate systems without requiring additional authentication challenges, especially when permissions are excessive or monitoring is insufficient.

While organizations have developed mature processes for managing employee identities, non-human identities often fall outside established governance frameworks. This growing disparity creates significant security blind spots and reinforces the need for continuous visibility, stronger lifecycle controls, and proactive third-party risk management.

Why static third-party risk assessments are no longer enough

Traditional Third-Party Risk Management (TPRM) programs often rely on annual questionnaires, compliance documentation, and spreadsheet-based checklists. Although these methods can help establish a baseline of vendor security practices, they cannot provide continuous visibility into a rapidly changing digital environment.

A compliance questionnaire may confirm that a vendor has a password management policy. It cannot, however, determine whether an API token issued two years ago remains active and has since been exposed through the vendor’s digital attack surface.

This is where the limitations of traditional TPRM become clear. To address these risks, organizations must move beyond periodic, documentation-based assessments toward continuous, automated, and technically validated risk monitoring.

A more effective approach combines vendor governance with ongoing visibility into exposed assets, misconfigurations, and potential credential leaks across the external attack surface. This shift enables security teams to identify emerging threats between formal assessments, prioritize remediation, and make more informed decisions about third-party risk.

Riskblade: Continuous visibility across your digital supply chain

At Riskblade, we help organizations address the security blind spots created by non-human identities and third-party integrations through continuous external attack surface visibility and monitoring.

Our approach focuses on two key capabilities:

External Attack Surface Analysis

Our External Attack Surface Analysis module continuously assesses the exposure of your digital assets and external ecosystem to identify misconfigurations, undocumented services, and potential sources of information or credential leakage.

By uncovering security weaknesses across your exposed infrastructure, organizations can gain greater visibility into their external attack surface and address potential risks before attackers exploit them.

Continuous Monitoring of Third-Party Integrations and Exposure

We help organizations maintain visibility into the evolving security posture of their suppliers and business partners. Riskblade identifies technical exposures and potential anomalies across the supply chain, helping security teams detect issues before they can be exploited by malicious actors.

This continuous approach supports faster responses to exposed credentials, compromised tokens, and third-party misconfigurations, reducing the time potential vulnerabilities remain undetected.

By complementing traditional TPRM processes with continuous technical monitoring, organizations can move toward a more proactive and risk-informed approach to supply chain security.

Conclusion: Securing the identities behind your digital ecosystem

Protecting today’s digital ecosystem requires organizations to look beyond employee credentials. Non-human identities are the backbone of modern automation, cloud infrastructure, and digital integration. Yet without effective lifecycle governance and continuous supply chain monitoring, these identities can become an easy route for cybercriminals seeking access to critical systems and sensitive data.

Do you know which credentials, API tokens, and third-party access permissions are still active across your digital ecosystem?

Discover how Riskblade helps you identify and address supply chain security risks through continuous external exposure monitoring. Request a demo today and take a more proactive approach to third-party cyber risk.