Question

Difficulty: MediumCIA Triad and Non-Repudiation

A security engineering team is establishing baseline controls for a cloud-native software delivery pipeline. Match each security implementation on the left with the primary security objective (CIA Triad pillar or Non-Repudiation) it provides on the right.

  • Digitally signing container images using an asymmetric private key prior to registry deployment.Non-Repudiation
  • Encrypting database backups at rest using AES-256 encryption.Confidentiality
  • Deploying auto-scaling groups across multi-region redundant load balancers.Availability
  • Generating SHA-256 cryptographic hashes for software release packages.Integrity

Answer

Digitally signing container images maps to Non-Repudiation; encrypting database backups at rest maps to Confidentiality; deploying multi-region auto-scaling load balancers maps to Availability; and generating SHA-256 hashes maps to Integrity.
Each security control aligns directly with a core security objective: Asymmetric digital signatures ensure Non-Repudiation because the signature uniquely proves origin identity. Encryption protects Confidentiality by preventing unauthorized disclosure. Redundant auto-scaling architectures maintain Availability by ensuring system resilience and uptime. Cryptographic hashing enforces Integrity by verifying that files have not suffered unauthorized tampering.

Step-by-Step Solution

1
Analyze container image signing
Asymmetric digital signatures tie an action to a specific private key owner.
This guarantees origin authenticity and prevents the publisher from denying authorship (Non-Repudiation).
2
Analyze database backup encryption
AES-256 encryption obscures sensitive static data.
Restricting unauthorized viewing of data enforces secrecy (Confidentiality).
3
Analyze multi-region auto-scaling
Redundant infrastructure withstands regional failures and sudden load increases.
Ensuring continuous system uptime and responsiveness supports service accessibility (Availability).
4
Analyze SHA-256 package hashing
A cryptographic hash produces a unique digest that changes if data is modified.
Verifying that files remain unaltered during transmission ensures data accuracy (Integrity).

Key Concept

Mapping technical controls to the CIA Triad (Confidentiality, Integrity, Availability) and Non-Repudiation principles.
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