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CIS Benchmarks

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CIS Benchmarks are detailed, prescriptive security configuration guidelines published by the Center for Internet Security (CIS), a US-based non-profit organization. They are developed through a consensus process involving cybersecurity practitioners, vendors, and government agencies, and cover over 100 technology families — operating systems (Linux, Windows, macOS), cloud platforms (AWS, Azure, GCP), container orchestrators (Kubernetes, Docker), databases, web servers, and network devices. CIS Benchmarks are international in applicability — they are not tied to any single jurisdiction — and are referenced by regulatory frameworks worldwide (NIST, PCI-DSS, HIPAA, FedRAMP, NIS2 national implementations). Each benchmark provides two recommendation levels: Level 1 (practical hardening that does not significantly impact functionality) and Level 2 (defense-in-depth settings for high-security environments). CIS Benchmarks are voluntary — no law mandates CIS compliance directly — but they are frequently required by procurement contracts, industry standards, and as evidence of “reasonable security measures” in regulatory audits. The CIS also offers CIS Controls (formerly the SANS Top 20), a prioritized set of cybersecurity best practices, and the CIS Hardened Images program for pre-configured virtual machine images.

Red Hat has a deep, official relationship with CIS Benchmarks. The CIS Red Hat Enterprise Linux Benchmark is one of the most widely deployed CIS profiles in enterprise environments, and Red Hat ships SCAP (Security Content Automation Protocol) content that automates assessment against CIS recommendations directly within RHEL using oscap. For OpenShift, the CIS OpenShift Container Platform Benchmark (currently v1.9.0) is natively supported by the Compliance Operator, which can scan cluster nodes and the Kubernetes API against CIS profiles (ocp4-cis, ocp4-cis-node), report findings, and auto-remediate non-compliant settings. Red Hat also publishes CIS Hardened Images for RHEL on AWS, Azure, and GCP marketplaces — pre-built virtual machine images that ship already configured to CIS Level 1 or Level 2 specifications. The practical value for customers is that CIS compliance is not an afterthought but an integrated, automatable property of the platform: a new OpenShift cluster can be scanned against CIS benchmarks within minutes of deployment, drift is continuously monitored, and remediation is applied declaratively through the operator lifecycle — reducing what was traditionally weeks of manual hardening work to a policy-as-code workflow.

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DISA STIG

DISA STIGs (Security Technical Implementation Guides) are published by the Defense Information Systems Agency (DISA), the US Department of Defense (DoD) agency responsible for IT infrastructure security standards. STIGs provide extremely prescriptive, line-item security configuration requirements for specific technology products — each STIG contains hundreds of individual “findings” (rules) specifying exact settings, permissions, and configurations required to harden a system. Unlike flexible frameworks (NIST 800-53) or guideline-oriented benchmarks (CIS), STIGs are mandatory for all DoD information systems and are referenced by the broader US federal government, defense contractors (via CMMC), and intelligence community systems. Each finding is categorized by severity: CAT I (high — failure could directly lead to loss of confidentiality, integrity, or availability), CAT II (medium), and CAT III (low). Systems must achieve full CAT I compliance and substantially address CAT II/III findings to receive an Authority to Operate (ATO). DISA publishes STIGs for hundreds of products and regularly updates them (typically quarterly). STIGs are developed in collaboration with the vendor — Red Hat, for instance, works directly with DISA to produce the RHEL STIG — and are made available to the public through DoD Cyber Exchange (public.cyber.mil). STIG compliance is verified using DISA’s STIG Viewer or automated tools like OpenSCAP that consume the machine-readable XCCDF/SCAP content.

GSMA NESAS

The GSMA Network Equipment Security Assurance Scheme (NESAS) is a voluntary, global security assurance framework jointly led by the GSMA and 3GPP. It was established to provide a universal, industry-driven security evaluation for mobile network equipment — primarily targeting 4G/LTE and 5G infrastructure — that avoids the fragmentation of country-specific security requirements. NESAS operates through two complementary components: first, an audit of the vendor’s development and product lifecycle processes (covering secure design, implementation, testing, and vulnerability handling), conducted by GSMA-appointed auditing organizations; second, a product evaluation against 3GPP-defined Security Assurance Specifications (SCAS), performed by ISO/IEC 17025 accredited security test laboratories. The GSMA manages scheme governance (accreditation, dispute resolution, publication of results), while 3GPP’s SA3 working group defines the technical security requirements and test cases in SCAS documents. The scheme is currently at NESAS v3.0 (specifications published early 2025), which introduces revised security requirements and expands coverage to include virtualized network functions. NESAS is voluntary — no government mandates it — but it is increasingly referenced by national 5G security reviews and procurement requirements (including the EU 5G Toolbox), and major operators use NESAS assessment results as a procurement criterion. Evaluated vendors and their results are publicly listed on the GSMA website.

ISO/IEC 27001

ISO/IEC 27001 is the world’s most widely recognized standard for Information Security Management Systems (ISMS). It is published jointly by ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) — making it a truly international standard, not tied to any single country or jurisdiction. The current version is ISO/IEC 27001:2022, which replaced the 2013 edition and restructured its Annex A controls to align with the updated ISO/IEC 27002:2022 guidance (93 controls organized in 4 themes: Organizational, People, Physical, Technological). The standard specifies requirements (clauses 4–10) for establishing, implementing, maintaining, and continually improving an ISMS — covering context analysis, leadership commitment, risk assessment, treatment planning, operational controls, performance evaluation, and continuous improvement. Certification is voluntary but has become a global market expectation: ISO 27001 certification is required by countless procurement policies, regulatory frameworks (NIS2 references it, ENS aligns with it, E-ITS accepts it as equivalent, BSI IT-Grundschutz enables ISO 27001 certification), and customer contracts. Certification is issued by accredited certification bodies (accredited under ISO/IEC 17021) following a two-stage audit process, valid for 3 years with annual surveillance audits. Over 70,000 organizations worldwide hold ISO 27001 certification. Unlike prescriptive frameworks (DISA STIG, CIS Benchmarks), ISO 27001 is risk-based and outcome-oriented — it specifies what must be achieved but not how, allowing organizations to tailor implementations to their context.