Certificate lifecycle management is now a privileged access problem

At a glance

What this is: This is Delinea’s analysis of why certificate lifecycle management and PAM need to be governed together, with certificate keys and renewal workflows treated as privileged access.

Why it matters: It matters because certificate sprawl, shared keys, and fragmented workflows create identity risk across machine, autonomous, and human programmes that IAM and PAM teams must control as one domain.

By the numbers:

• The lifespan of TLS/SSL certificates is now just 47 days, so the operational burden is a near-continuous burden.
• 61% rely on spreadsheets or manual tracking for machine identity management.
• Average time to detect a compromised machine identity: 214 days.

👉 Read Delinea’s analysis of fast, unified PAM and certificate lifecycle management

Context

Certificate lifecycle management is the operational discipline of issuing, renewing, rotating, and revoking certificates without creating exposure windows or service outages. In this article, Delinea argues that certificate-based authentication is no longer a separate operations problem. It is part of the wider machine identity and privileged access control plane, because the keys that unlock certificates are themselves privileged secrets.

The governance gap is fragmentation. Many enterprises run certificate workflows differently from passwords, service accounts, and other machine identities, which makes policy enforcement inconsistent and audit evidence harder to produce. That matters for certificate management, but it also matters more broadly for NHI governance because the same pattern of split tooling, unclear ownership, and manual handling shows up across identity programmes.

Key questions

Q: How should security teams govern certificate lifecycles in a PAM programme?

A: Security teams should treat certificate issuance, renewal, and deployment as privileged operations, not background administration. That means controlling the keys that unlock those workflows, logging every change, and tying certificate ownership to a named system owner. When certificates are governed inside PAM, audit evidence and revocation become much more reliable.

Q: Why do shared certificate keys increase machine identity risk?

A: Shared keys create a larger blast radius because one exposed secret can affect multiple certificates or workloads. If the same key protects several systems, compromise of one environment can quickly become compromise of many. Unique key material and clear ownership are the main ways to limit that spread.

Q: What breaks when certificate renewal is handled manually?

A: Manual renewal breaks consistency. Teams miss expirations, lose ownership context, and produce weak audit evidence because the process depends on spreadsheets, emails, or operator memory. As certificate lifetimes shrink, manual handling becomes too slow and too error-prone to serve as a real control.

Q: Who is accountable when a certificate-related outage or compromise occurs?

A: Accountability should sit with the system owner and the team that manages the certificate workflow, not only with infrastructure operations. If renewal, revocation, and deployment are not assigned to a governed process, the organisation cannot prove who approved the change or who owned the risk.

Technical breakdown

Why certificate lifecycle management behaves like privileged access

Certificates are not just trust objects. They depend on private keys, CA trust chains, renewal logic, and deployment paths that determine whether a machine or service can authenticate. When teams manage certificate issuance separately from the credentials that unlock certificate operations, they create a second privilege layer outside normal PAM controls. That is where exposure grows: keys are copied, shared, or stored in places that are easier to reach than the certificates they protect. In practice, certificate lifecycle management is a privileged access workflow with a cryptographic front end.

Practical implication: Treat certificate-operation keys as privileged secrets and bring them under the same control plane as other high-risk credentials.

How shared certificate keys widen blast radius

The article’s key operational warning is that a single key may unlock multiple certificates or multiple machine identities. That means compromise is rarely local. If one key is exposed through insecure storage, malware, or a lost device, every dependent certificate can become reachable. This is not the same as a simple expired credential problem. It is an identity concentration problem, where one secret governs many trust relationships. The result is broader lateral movement potential and a larger recovery scope than many teams plan for.

Practical implication: Inventory which certificates share keys or management credentials, then reduce any pattern that lets one compromise fan out across many systems.

Why manual certificate handling breaks compliance and auditability

Manual workflows do not scale when certificate lifetimes shorten and renewal cycles become more frequent. The article notes that certificates are now managed under tighter time pressure, which turns renewal into a continuous governance task rather than an annual event. Manual handling also fragments evidence, because reporting, ownership, and change records sit in different systems. That makes compliance harder to prove and outage risk harder to predict. The practical issue is not only inefficiency. It is that undocumented human intervention becomes the default control mechanism.

Practical implication: Automate renewal, rotation, and reporting so certificate governance produces consistent evidence instead of ad hoc operator memory.

Threat narrative

Attacker objective: The attacker seeks to impersonate trusted machines or services and use that trust to move laterally, steal data, or disrupt operations.

1. Entry begins when certificate credentials or private keys are exposed through shared workflows, insecure storage, or misconfigured management systems.
2. Escalation occurs when attackers reuse those keys to operate certificate-backed identities, impersonate services, or expand access across systems that trust the same certificate material.
3. Impact follows as fraudulent certificates, unauthorized authentication, lateral movement, or service disruption undermine trust in the machine identity environment.

Breaches seen in the wild

• Shai Hulud npm malware campaign — Shai Hulud campaign: npm malware exposed secrets on GitHub.
• Reviewdog GitHub Action supply chain attack — reviewdog/action-setup GitHub Action supply chain attack exposed secrets.

Read our 52 NHI Breaches Analysis report for a comprehensive view of breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Certificate lifecycle management is now privileged access governance, not just operations. Delinea’s framing is useful because it shows that the real control surface is the secret that operates certificate workflows, not the certificate alone. Once certificate handling is split from PAM and the rest of identity governance, ownership becomes fragmented and the audit trail weakens. The implication is that certificate lifecycle decisions belong in the same governance model as other privileged credentials.

Shared key infrastructure creates identity blast radius. A single certificate key that protects multiple machines or services turns one compromise into many potential authentication paths. That is a structural weakness, not a tuning issue, because the blast radius is embedded in the trust design. Practitioners should read this as a warning about concentrated machine identity risk across environments with reused or centrally distributed key material.

Certificate management complexity is a lifecycle problem that manual process cannot absorb. When certificate validity windows shrink and renewal cadence increases, spreadsheets and ad hoc operator steps become a control failure rather than a workaround. The governance gap is not lack of intent. It is that manual handling cannot produce reliable ownership, repeatable evidence, or timely revocation at scale. The implication is that certificate lifecycle must be treated as continuous identity governance.

Unified machine identity governance is the named concept this article points toward. Certificates, renewal workflows, and privileged access controls stop being separable once organisations depend on them for machine authentication at scale. That convergence matters because policy drift in one layer becomes trust failure in the other. The practitioner conclusion is to manage certificate operations as part of a broader machine identity programme, not as an isolated infrastructure task.

From our research:

• Certificate expiry is the leading cause of outages for 45% of organisations, according to The Critical Gaps in Machine Identity Management report.
• 61% rely on spreadsheets or manual tracking for machine identity management, which shows how quickly certificate workflows become governance debt when ownership is diffuse.
• If you are building lifecycle controls, review NHI Lifecycle Management Guide next for the operational model that closes inventory, rotation, and offboarding gaps.

What this signals

Certificate governance is converging with machine identity governance. Teams that still separate certificates from the rest of NHI controls will keep inheriting duplicated workflows, inconsistent ownership, and weak evidence. The practical shift is to align certificate renewal, key handling, and reporting with the same lifecycle discipline used for other privileged identities, not with ad hoc infrastructure operations.

With 57% of organisations lacking a complete inventory of their machine identities, according to The Critical Gaps in Machine Identity Management report, certificate management cannot be treated as a closed system. The first programme signal to watch is whether owners can actually name every certificate and key path before expiry pressure turns into an outage.

Credential concentration is the hidden risk signal here. When one secret or key can unlock many trust relationships, incident response becomes a containment problem instead of a simple rotation task. Practitioners should prepare for tighter integration between secrets management, machine identity inventory, and privileged access reporting across hybrid environments.

For practitioners

• Map certificate-operation privileges to PAM controls Identify every account, key, and workflow that can issue, renew, or deploy certificates. Bring those operations under the same approval, session control, and auditing model used for other privileged access paths.
• Eliminate shared certificate keys where possible Replace reused keys with unique key material per identity or per workload. Where sharing is unavoidable, document the blast radius and the recovery steps before a compromise occurs.
• Automate renewal and revocation evidence Use policy-driven automation for certificate renewal, key rotation, and revocation reporting so compliance evidence is created during the workflow, not reconstructed after the fact.
• Centralise certificate and secret inventory Keep a single inventory of certificates, keys, owners, and expiration dates so operations teams can see which machine identities depend on which trust relationships.

Key takeaways

• Certificate lifecycle management is a privileged access issue because the keys that operate certificates can expose the same trust paths PAM is meant to protect.
• Shared keys, manual renewal, and fragmented workflows expand blast radius, increase outage risk, and weaken auditability at machine-identity scale.
• Practitioners should unify certificate governance with secrets management and lifecycle controls so renewal, revocation, and ownership are continuously enforced.

Key terms

• Certificate Lifecycle Management: The process of issuing, renewing, rotating, deploying, and revoking certificates in a controlled way. In practice, it is an identity governance function because the certificate only remains trustworthy if the surrounding ownership, approval, and key-handling process is reliable.
• Private Key: A secret value that proves control over a certificate or cryptographic identity. In machine identity programmes, private keys are privileged assets because exposure can allow impersonation, unauthorized authentication, or reuse across multiple workloads if controls are weak.
• Blast Radius: The amount of damage a compromised identity or secret can cause before it is contained. For certificates, blast radius grows when one key or trust path governs multiple systems, making a single exposure more likely to affect many services.
• Machine Identity: A non-human identity used by software, devices, or services to authenticate and obtain access. It includes certificates, keys, tokens, and service credentials, and it must be governed with ownership, lifecycle controls, and auditability rather than ad hoc administration.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity security are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are responsible for identity security strategy or NHI governance in your organisation, it is worth exploring.

This post draws on content published by Delinea: Fast, unified PAM and Certificate Lifecycle Management. Read the original.