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SecurityX CAS-005 secure DevOps guidance recommends integrating security controls into the CI/CD pipeline. By validating container security baselines at security gates before deployment, noncompliant builds are stopped early, ensuring consistency across environments.

Option B is useful but does not ensure compliance if changes are made after image creation.

Option A detects drift but only after deployment.

Option D is reactive and does not prevent insecure deployments.

To reduce the number of failed patch deployments, the systems administrator should implement a robust change management process. Change management ensures that all modifications to systems or applications are planned, tested, and approved before deployment. This systematic approach reduces the risk of unplanned changes that can cause patch failures and ensures that patches are deployed in a controlled and predictable manner.

The most critical considerations are trust boundaries (C) and supply chain access (E). Trust boundaries define where sensitive data crosses between systems or organizations, requiring strict cryptographic protections—especially important in government and commercial environments subject to crypto-export controls.

Supply chain access is also critical because hardware and software are sourced from external vendors. If suppliers are compromised, attackers could introduce malicious code, backdoors, or tampered firmware, endangering customers worldwide.

Option A (contractual obligations) and B (legal hold) are compliance-related but not direct security threats. Option D (cloud services enumeration) is irrelevant unless the storage is cloud-based. Option F (homomorphic encryption) is an advanced technology but not required for base threat modeling.

CAS-005 highlights modeling adversary capabilities at trust boundaries and accounting for supply chain risks, making C and E the most important.