TL;DR: Digital certificates are positioned as a practical control for healthcare organisations facing encrypted communications, device authentication, and compliance pressure under HIPAA and GDPR, according to GlobalSign. The real governance issue is not whether certificates exist, but whether identity, device trust, and certificate lifecycle controls are strong enough to keep pace with connected care.
At a glance
What this is: GlobalSign argues that digital certificates are becoming a core control in healthcare because they help authenticate devices, secure patient communications and support compliance obligations.
Why it matters: For IAM, NHI and security teams, the important issue is not the certificate alone but whether device identity, trust and lifecycle controls can scale with connected care.
Context
Digital certificates are a trust control, not just a transport security feature. In healthcare, they sit at the boundary between systems, users and connected devices, deciding which endpoints can join the environment and which communications can be trusted.
That matters because modern care delivery now depends on telemedicine, electronic records and medical IoT devices, all of which expand the attack surface. Where device identity and certificate lifecycle are weak, encrypted traffic can still be routed through untrusted systems and patient data remains exposed.
Key questions
Q: How should healthcare organisations use digital certificates to secure connected medical devices?
A: Healthcare organisations should use digital certificates to verify device identity before a device joins the network, then encrypt data exchanged by that device during operation. That approach reduces the chance that unauthorised or spoofed devices can transmit data, interfere with clinical systems, or expose patient information. Certificates work best when paired with inventory, lifecycle management, and access controls.
Q: Why do certificates matter for patient data protection in healthcare?
A: Certificates matter because they provide authenticated encryption for data in transit and help confirm that users, devices, or services are legitimate. That reduces interception risk and limits unauthorised access across portals, APIs, and connected devices. They are only effective, however, when their lifecycle is actively managed and trust decisions are reviewed.
Q: What breaks when certificate lifecycle management is weak in healthcare?
A: Expired, duplicated or unrevoked certificates can leave systems trusting devices or services that should no longer be trusted. That creates operational fragility, because encrypted connections may fail unexpectedly, and security fragility, because trust can persist after a device is retired, replaced or compromised.
Q: Should organisations treat vendor AI risk as part of IAM and NHI governance?
A: Yes. When a vendor AI system uses machine credentials, API access, or delegated permissions to perform work, it becomes an identity governance issue as well as an AI governance issue. The practical test is simple: if the system can act on your behalf, it needs the same ownership, scope, and review discipline as other high-risk delegated access.
Technical breakdown
How device certificates establish trust for connected medical systems
Device certificates provide a cryptographic identity that a system can verify before allowing network access or data exchange. In healthcare, that matters because pumps, monitors and other clinical devices increasingly behave like endpoints on a managed network, not isolated equipment. The certificate binds a device to an approved identity, while the validation process checks that the device presenting itself is the one authorised to connect. This is different from simple encryption, which protects data in transit but does not on its own prove who or what is talking.
Practical implication: Treat certificate-based device authentication as an admission control point for the clinical network, not a comfort blanket for encrypted traffic.
Why SSL/TLS certificates matter for patient communications
SSL/TLS certificates create the encrypted channels used by portals, telemedicine platforms and system-to-system exchanges. They protect confidentiality in transit, but they also support trust by ensuring the endpoint behind the connection can be validated. In healthcare, that combination matters because patient data often moves between clinicians, applications, insurers and remote services. If certificate issuance, renewal or validation breaks down, organisations can end up with encrypted connections that are still operationally unreliable or misdirected.
Practical implication: Align certificate management with the communication paths that carry protected health data, not only with public-facing web traffic.
Certificate lifecycle is the governance issue behind healthcare trust
The hardest part of certificate security is not initial deployment but ongoing lifecycle control. Certificates expire, get replaced, move between systems and, in some environments, are issued at scale to devices and services that are difficult to track manually. In healthcare, that creates an identity governance problem because the certificate becomes a proxy for trust across both human and non-human identities. If ownership, renewal, revocation and inventory are inconsistent, the control can drift out of alignment with the actual device or service estate.
Practical implication: Build certificate inventory, ownership and renewal into identity governance processes so trust does not outlive the asset it represents.
NHI Mgmt Group analysis
Certificate governance is becoming an identity problem in healthcare. The article is not really about encryption alone, because encryption without trustworthy device and service identity does not solve the control problem. In connected care, certificates function as machine identity evidence, which means lifecycle ownership, renewal and revocation matter as much as issuance. The practical conclusion is that healthcare security teams should manage certificates as part of identity governance, not as a standalone network setting.
Healthcare certificate sprawl creates a trust gap between security policy and clinical reality. Telemedicine, remote monitoring and electronic records multiply the number of endpoints that need authenticated access, and manual tracking cannot keep pace. When certificates are distributed across devices, applications and service connections, the risk is not only expiry but unnoticed trust persistence after a device or service should no longer be trusted. Practitioners need a clear view of which identities certificates represent and where they are used.
Digital certificates reduce exposure, but only when they are tied to the full lifecycle of non-human identities. The article points to devices as a core use case, which makes the NHI angle explicit: a medical device certificate is effectively a machine identity control. That is why certificate inventory, ownership, renewal and revocation belong in the same governance conversation as IAM and PAM for humans. The field should stop treating certificates as peripheral plumbing and start treating them as policy-enforced trust records.
Compliance pressure is reinforcing, not replacing, technical trust controls. HIPAA and GDPR do not make certificates sufficient, but they do make weak trust governance harder to defend. In practice, healthcare organisations need a control set that can evidence who or what was authorised, when trust was granted and how it was withdrawn. The implication for practitioners is clear: certificate control must be auditable, because compliance asks for proof, not intentions.
What this signals
Healthcare certificate sprawl is really machine-identity sprawl. Once certificates are used to authenticate devices, portals and services, the governance question becomes who owns each trust record and how quickly it can be revoked when the asset changes. For practitioners, that means certificate management needs to sit inside the same operating model as IAM, PAM and NHI lifecycle control.
HIPAA and GDPR pressure makes auditability part of the control design. Healthcare teams need to prove that encrypted channels are backed by valid identity checks and that expired or retired certificates are not still trusted. The practical signal is simple: if you cannot show certificate ownership, renewal and revocation evidence, you do not really control the trust boundary.
Digital certificates are becoming a proxy for trust decisions that used to be handled implicitly. As care delivery moves further into telemedicine and remote monitoring, organisations must move from ad hoc certificate handling to governed issuance, renewal and offboarding. That shift is most visible where device identity and patient data protection meet.
For practitioners
- Inventory all certificate-bearing assets Map every certificate used by portals, devices, APIs and internal systems so ownership, purpose and renewal dates are visible in one place.
- Tie certificates to device identity governance Treat medical device certificates as machine identities with named owners, defined lifecycles and revocation paths when devices are retired or compromised.
- Prioritise renewal and revocation controls Automate renewal workflows and revocation triggers so expired or compromised certificates do not remain trusted inside the healthcare environment.
- Audit encrypted channels for trust gaps Check whether encrypted healthcare traffic is backed by proper certificate validation, especially in telemedicine, remote monitoring and partner integrations.
Key takeaways
- Digital certificates are moving from background infrastructure to a frontline control for healthcare trust, especially where devices and remote services must be authenticated before data moves.
- The article links certificate use to both confidentiality and compliance, showing that healthcare security depends on whether trust can be proven and maintained across the full lifecycle.
- For practitioners, the control gap is governance rather than encryption: certificates only protect patient data when ownership, renewal and revocation are managed as part of identity operations.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 and MITRE ATT&CK address the attack and risk surface, while NIST CSF 2.0 and NIST SP 800-53 Rev 5 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-04 — Insecure Authentication | Certificates are used here to authenticate healthcare devices and services before access is granted. |
| NHI-07 — Long-Lived Secrets | Certificates and their trust periods create lifecycle risk when expiry and revocation are not tightly managed. | |
| Recommendation — Apply NHI-04 to validate certificate-based authentication across devices, portals and service connections. Use NHI-07 to shorten trust windows and remove certificates that remain valid beyond their intended use. | ||
| NIST CSF 2.0 | PR.AA-05 — Access Permissions, Entitlements and Authorizations | Certificate trust determines which devices and systems are authorised to connect and exchange data. |
| Recommendation — Apply PR.AA-05 to govern certificate-backed authorisation for healthcare systems and connected devices. | ||
| NIST SP 800-53 Rev 5 | IA-5 — Authenticator Management | Certificate issuance, renewal and revocation are authenticator management problems in this context. |
| Recommendation — Use IA-5 to control certificate issuance, renewal and revocation across the healthcare environment. | ||
| MITRE ATT&CK | TA0006;TA0008 — Credential Access; Lateral Movement | Weak certificate governance can enable impersonation of trusted devices and movement between clinical systems. |
| Recommendation — Map certificate misuse to TA0006 and TA0008 to prioritise detection across trusted healthcare connections. | ||
Key terms
- Digital certificate: A cryptographic credential issued for a defined period that can be used to prove identity during authentication. It supports stronger, time-bound access control, but only when issuance, renewal, and revocation are managed as part of the identity lifecycle.
- Device Authentication: Device authentication is the process of confirming that a connecting device is legitimate before granting access or allowing communication. For healthcare organisations, it is a key control for connected medical devices, but it only works when trust is validated continuously and revoked promptly when conditions change.
- Certificate Lifecycle Management: The governance of digital certificates from issuance through renewal and revocation, ensuring certificates are valid, monitored, and rotated before expiry. Expired certificates are a leading cause of outages and unplanned security gaps.
- Machine Identity: The digital identity of a machine, device, or workload, such as a server, container, or VM, used to authenticate it within a network. Sometimes used interchangeably with NHI, though NHI is the broader category.
Deepen your knowledge
NHI Mgmt Group covers identity security, NHI governance, and agentic AI through the NHI Foundation Level course, the industry's only accredited NHI security programme. It is designed for practitioners who need to connect lifecycle governance, trust controls and operational identity risk.
Published by the NHIMG editorial team on July 11, 2026.
Updated on October 11, 2026.
NHI Mgmt Group, the independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org