Why does eBPF visibility not solve NHI risk by itself?

Why eBPF Visibility Helps, but Only as One Layer

eBPF is strong at observing what a process, container, or node actually does at runtime. That makes it useful for finding suspicious calls, unusual network paths, or unexpected token use. The limitation is structural: visibility tells you what happened, not whether the underlying access should exist, who owns it, or whether it is still valid.

That distinction matters because NHI risk is often created before any runtime event occurs. A service account can be overprivileged, a workload identity can be orphaned, or a token can be long-lived and still never trigger an obvious anomaly. eBPF can help you see activity, but it cannot decide entitlement, ownership, or lifecycle on its own.

For that reason, the right mental model is to treat eBPF as an instrumentation and detection layer, not as a governance control. It can confirm behaviour and accelerate investigation, but it does not replace inventory, ownership, rotation, revocation, or least-privilege policy. If the identity model is wrong, better telemetry only makes the wrong state easier to watch.

What eBPF Can and Cannot Prove About an NHI

eBPF is best when the question is “what did this workload just do?” It is much weaker when the question is “should this workload have been able to do that?” That second question requires authoritative identity context, policy, and lifecycle records. Without those, telemetry may look impressive while the underlying access model remains unsafe.

This is especially important for identities that are created by infrastructure, automation, or deployment tooling. Runtime signals may show a token exchange, secret access, or service-to-service call, but they do not establish whether the identity was approved, whether the scope was excessive, or whether the account should have been decommissioned already. Those are governance outcomes, not sensor outcomes. For a broader identity view of these failure modes, the key challenges and risks around visibility gaps, sprawl, and unmanaged credentials are the right starting point.

That is also why teams often overestimate the value of “we can see it now.” Seeing an NHI use a secret does not tell you whether the secret should exist, whether the workload still needs it, or whether a human quietly reused it somewhere else. Those questions require identity governance, and eBPF only becomes more useful when it feeds that process. The operational view of service accounts in the Service Account Security Guide is helpful here because service accounts are a common place where runtime use and entitlement drift diverge.

Why Visibility Without Governance Still Leaves NHI Risk

Visible behaviour can reduce mean time to detect, but it does not reduce blast radius by itself. If a token is over-scoped, a secret is never rotated, or an identity is not tied to an owner, the risk remains even if every call is observable. In practice, high-fidelity telemetry can even create false confidence if teams mistake observability for control.

That is why the control question should always follow the visibility question. First ask whether the identity is needed, bounded, and owned. Then use instrumentation to detect deviations from that intended state. If the answer to the first question is unknown, you have a governance gap, not a detection gap.

eBPF is strongest when paired with identity, secret, and access controls that define the allowed state. A useful benchmark is the NHI Ownership and Accountability Guide, because ownership is what makes lifecycle decisions actionable. Visibility can expose orphaned behaviour, but ownership is what lets the organisation correct it. Similarly, the rotation challenges guide helps frame why telemetry alone does not solve long-lived credential exposure.

Risk and Threat Considerations

Runtime visibility can be useful to defenders, but it also leaves a dangerous gap if organisations treat “we can observe it” as equivalent to “we control it.” An attacker who steals a long-lived token, abuses an overprivileged service account, or reuses a credential across environments can still operate inside the visibility envelope and remain materially effective.

Failure mechanism: The identity problem sits upstream of the telemetry. If access is excessive, ownership is unclear, or offboarding is weak, the compromised or misused NHI still has legitimate-looking runtime behaviour that eBPF can record but not prevent.

Impact: The organisation may detect activity later, but it still absorbs the blast radius of the bad entitlement, including lateral movement, unauthorized data access, and persistence through reused or long-lived credentials.

Practitioner Guidance

What to prioritise: Use eBPF to enrich detection and investigation, but prioritise identity inventory, ownership, privilege review, and credential lifecycle as the actual risk-reduction controls. If those are weak, telemetry should be treated as a compensating signal, not a control substitute.

What to verify: For each high-risk workload or service account, verify who owns it, what it is allowed to access, when it expires, and whether the runtime behaviour matches that intended scope. If you cannot answer those four questions, the identity is not governed well enough for visibility to be reassuring.

Practitioner takeaway: eBPF can show you abuse faster, but only identity governance can make the abuse harder to do in the first place.

Related resources from NHI Mgmt Group

• Why do leaked secrets remain such a persistent NHI risk?
• What makes idle secrets such a serious NHI risk?
• What is the main NHI risk in ServiceNow integrations?
• Why do Salesforce integrations increase NHI risk?