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Platform conceptIntermediate

Virtualization and Containers

Virtualization and containers isolate workloads and share underlying resources through hypervisors, operating-system controls, images, and orchestration platforms.

What it means

Security depends on the management plane, host, images, runtime configuration, network boundaries, secrets, identity, and the degree of isolation provided by the technology.

Why it matters

These platforms improve flexibility but can concentrate risk when many workloads depend on one control plane or vulnerable base image.

Practical focus

  • Harden and restrict the management plane
  • Use trusted, minimal, and updated images
  • Separate workloads according to sensitivity
  • Monitor runtime behavior and configuration drift

Common mistakes

  • Treating a container as a full security boundary
  • Embedding secrets in images
  • Leaving orchestration administration broadly accessible

Certification relevance

This subject appears in or supports the following certification bodies of knowledge:

CompTIA A+CompTIA Security+CompTIA CySA+

Authoritative sources