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06/06/2026 11:24 am
TL;DR: Post-quantum cryptography planning is moving from theory to execution as NIST finalizes FIPS 203, 204, and 205 and CISA urges discovery, inventory, and migration planning, but the article argues that PCs remain the overlooked cryptographic surface in enterprise readiness, according to Keyfactor. The real risk is not just quantum exposure, but the blind spot created when endpoint cryptography is excluded from inventory, prioritization, and transition planning.
NHIMG editorial — based on content published by Keyfactor: PQC Without the PC Is Incomplete: The Endpoint Blind Spot in Post-Quantum Cryptography
By the numbers:
- 69% of organisations now have more machine identities than human ones.
- 53% of organisations have experienced a security incident directly related to machine identity management failures.
- Only 44% of organisations have implemented any policies to manage their AI agents, despite 92% agreeing that governing AI agents is critical to enterprise security.
Questions worth separating out
Q: How should security teams start PQC readiness for endpoint PCs?
A: Start with a cryptographic inventory of the endpoint estate, then classify systems by algorithm exposure, data sensitivity, and refresh timing.
Q: Why do PCs create a blind spot in post-quantum planning?
A: PCs create a blind spot because they hold the cryptography used at the point of access, yet many programmes only inventory servers, cloud workloads, and core applications.
Q: What breaks when endpoint cryptography is not included in PQC migration?
A: Migration breaks when teams cannot see where vulnerable algorithms and long-lived trust material exist on PCs, so they cannot prioritise remediation or align it to device lifecycle events.
Practitioner guidance
- Inventory endpoint cryptography first Scan PCs for certificates, keys, weak algorithms, and cryptographic dependencies across firmware, OS, and applications before defining migration scope.
- Prioritise long-lived data pathways Rank endpoints by the sensitivity and retention period of the data they handle, then move the longest-lived confidentiality use cases ahead of low-value assets in the remediation plan.
- Align remediation to lifecycle events Tie cryptographic replacement to hardware refresh cycles, software updates, and vendor transition timelines so endpoint change happens in controlled waves rather than as an enterprise-wide cutover.
What's in the full article
Keyfactor's full blog covers the operational detail this post intentionally leaves for the source:
- Endpoint discovery workflows for cryptography across PC fleets and adjacent infrastructure.
- Operational guidance for classifying certificates, keys, and quantum-vulnerable algorithms.
- Integration details for existing endpoint and service management platforms used in enterprise environments.
- Practical sequencing for aligning remediation with hardware refresh and vendor migration timelines.
👉 Read Keyfactor's analysis of endpoint cryptography in PQC planning →
Endpoint cryptography in PQC planning: are PCs the blind spot?
Explore further
06/06/2026 12:11 pm
Endpoint cryptography blind spots are the hidden failure mode in PQC readiness. Organisations tend to model quantum transition around central infrastructure, but PCs are where trust material is generated, cached, validated, and consumed. That makes the endpoint a governance boundary, not just a device class. The practical conclusion is that PQC readiness cannot be claimed until endpoint cryptography is visible and included in the programme scope.
A few things that frame the scale:
- Only 44% of organisations have implemented any policies to manage their AI agents, despite 92% agreeing that governing AI agents is critical to enterprise security, according to the 2026 Infrastructure Identity Survey.
- A separate finding in the same survey shows that 67% of organisations still rely heavily on static credentials despite the risks they pose to agentic AI deployments.
A question worth separating out:
Q: Who is accountable for endpoint cryptography in quantum transition planning?
A: Accountability should sit with the teams that own endpoint security, identity governance, and platform lifecycle management together, because endpoint cryptography affects access, data protection, and device operations at the same time. NIST-aligned zero trust planning and broader cyber governance both require that ownership to be explicit, not implied.
👉 Read our full editorial: PQC planning is incomplete without endpoint cryptography visibility
