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Is Tabletop crypto break Quantum Proof? Cyber Program & PQC

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

Verdict

Tabletop exercises for crypto compromise build muscle memory for both classical breaches and future CRQC-driven emergencies. Run at least one annually for critical trust anchors.

Overview

Scenarios: leaked code-signing key, forced CA distrust, mass VPN cert invalidation, forged SSO assertions.

Include comms, legal, and vendor coordination—not only SOC.

Program inventory focus: Unpracticed rotation takes too long under real stress. Typical classical surfaces: Simulated CA/IdP/code-signing compromise. Cross-read /security/program and /assessment. Educational only—not compliance advice.

Cryptographic profile

What breaks

  • IT-only participants
  • No after-action fixes

Mitigations

  • Annual exercise
  • Track remediation to closure
  • Link to IR runbooks

FAQ

Need quantum scenario?

Classical key compromise scenarios already stress the same muscles.

Facilitator?

Internal risk team or external facilitator both work.

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