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Is Shared responsibility Quantum Proof? Industry Quantum Risk

Risk: high · Confidence: high · Reviewed: 2026-07-19

Verdict

Shared responsibility models are not quantum-proof controls. They assign who must migrate which algorithms—diagram ownership for TLS, KMS, and identity explicitly.

Overview

Providers secure the cloud; customers secure in the cloud. PQC work appears on both sides of that line.

Write RACI for crypto inventory or it will not happen.

Cryptographic profile

What breaks

  • No owner for customer-managed certificates
  • Blind trust in provider defaults
  • Identity federation left out of cloud reviews

Mitigations

  • RACI for keys, certs, and IdP
  • Contractual crypto transparency
  • Annual joint review with major providers

FAQ

Related?

/industries/cloud and cloud-kms

SaaS?

/industries/cloud/saas-tenants

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