Index/Guides/ CAIQ v4◆ CEK-04

How to answer 'Is data encrypted in transit?' on a CAIQ

I. Reviewer Guidance & Pitfalls

Name the protocol version (TLS 1.2 minimum, ideally 1.3), state whether it's enforced for both external and internal/service-mesh traffic, and flag any legacy exception. A 'yes' that only covers the customer-facing edge while internal services use plaintext is the exact contradiction reviewers are trained to probe.

II. Example Answer Passing Enterprise Audit

Compliant Response Sealed · CEK-04
Yes. All external traffic is TLS 1.3; internal service-to-service traffic is encrypted via mTLS within the service mesh (SOC 2, CC6.1).

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