Trust Boundaries and Scope
We identify security-relevant dependencies in the existing PKI.
- Record CA structure and relying systems
- Document administrative boundaries
- Prioritise critical uses
- Agree test approvals and limits
Architecture, implementation and traceable evidence
PKI Security Review: Assess Trust and Key Protection
ADVISORI reviews selected security boundaries of an existing PKI.
- 01Define scope and sensitive roles
- 02Examine issuance, profiles and access rights
- 03Assess evidence and detection mechanisms
- 04Review incident and recovery procedures
11+Years of experience
120+Employees
540+Projects
ISO 27001certified
PKI Security Review: Assess Trust and Key Protection
The service assesses an existing PKI within an agreed scope. We examine who can obtain trusted certificates or change sensitive settings, and how misuse is detected and handled. Initial CA implementation, device rollout and routine certificate administration are separate scopes. A review is not a complete certification or regulatory examination.
ADVISORI reviews selected security boundaries of an existing PKI. Administrative access, certificate issuance, key protection and incident procedures are assessed against concrete evidence and prioritised actions.
6 service modules
What we take on for you
Bookable individually or as an end-to-end programme.
Issuance and Permissions
We assess who can request and approve which certificates.
- Compare roles and privileged access
- Review profiles and permitted purposes
- Trace approval evidence
- Agree a test for unauthorised requests
Key and Configuration Protection
We assess protective measures using available evidence.
- Identify sensitive keys and storage boundaries
- Examine separation of administrative duties
- Review change approvals and records
- Document backup and recovery limitations
Monitoring and SOC Integration
We test whether agreed events are visible and actionable.
- Map event sources and recipients
- Exercise controlled alert cases
- Document detection limitations
- Trace response and escalation
Incident Preparation
We assess readiness for suspected misuse.
- Identify decision-makers and contacts
- Prepare revocation and trust-change procedures
- Record recovery dependencies
- Walk through a defined scenario
Findings and Follow-up
We connect observations to verifiable improvements.
- Record findings with evidence and priority
- Agree owners and deadlines
- Define closure criteria for each action
- Document retests and remaining risks
5 phases
Our PKI Security Approach
Inputs include architecture, roles, certificate profiles and authorised examples of operating evidence. Tests have agreed owners, boundaries and stop conditions. The report separates observation, assessment, evidence and action. Untested components remain visible. A review assignment alone does not authorise changes to production keys or trust relationships.
Define scope and sensitive roles
Examine issuance, profiles and access rights
Assess evidence and detection mechanisms
Review incident and recovery procedures
Prioritise actions and agree follow-up tests
Your contact
Sarah Richter
Head of Information Security, Cyber Security
10+ years of experience, CISA, CISM, Lead Auditor, DORA, NIS2, BCM, Cyber and Information Security
Why ADVISORI for PKI Security?
- 01Agree test approvals and limits
- 02Agree a test for unauthorised requests
- 03Trace response and escalation
- 04Document retests and remaining risks
🎯 Strategic PKI Security Advantage
Consider the impact of a compromised requester or administrator. A technically valid certificate may still have been issued without proper authorisation through a flawed approval process.
7 QUESTIONS, BRIEFLY ANSWERED
Frequently asked questions about PKI Security Review: Assess Trust and Key Protection
What does a PKI security review assess?
The review examines agreed trust and access boundaries in an existing PKI, potentially including issuance, profiles, administrative rights, key protection and incident procedures. Evidence and untested areas are identified. The result does not automatically establish the security of every application using certificates.
How is certificate issuance reviewed?
We compare permitted requesters, profiles and approval rules with concrete records. An authorised test can examine whether an improper request is rejected. Production permissions are not changed without separate approval. A correctly signed certificate is not by itself proof that issuance was authorised.
What can security monitoring demonstrate?
Monitoring can reveal defined events such as unusual requests or administrative changes. We test the source, rule and response path. A successful alert proves the tested case, not detection of every attack. Certificate Transparency is not assumed to provide a complete inventory of a private PKI.
How is suspected key compromise prepared for?
A scenario identifies decision-makers, affected certificates, dependent applications and possible responses. Revocation, trust changes and replacement require coordinated steps. We assess documented procedures and evidence within scope. Automatic recovery without considering trust consequences is not promised.
Does an HSM establish all required security controls?
No. Protection depends on the module, operating mode, integration and administrative procedures. Product evidence is assessed against its actual scope. Even protected keys can coexist with excessive issuance rights or incorrect trust decisions. These are separate control objectives in the review.
How are results handed over to the SOC and operating teams?
Findings identify the event source, observation, potential consequence and accountable team. Alerts have agreed owners and escalation routes. Actions receive verifiable closure criteria. Implemented improvements, open work and later retest results are reported separately.
How are IoT and edge components considered?
We identify intermittently connected devices, update capabilities and identity handling during replacement or loss. The review examines actual status-checking and trust behaviour. A general PKI design does not establish the security of every device platform. Future cryptographic changes require a separate dependency and compatibility assessment.
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