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Cyber Risk Council
Category: Compliance Frameworks & Standards

CIS Benchmarks

Also known as: Center for Internet Security Benchmarks, CIS Security Benchmarks, CIS Secure Configuration Benchmarks
Simply put

CIS Benchmarks are published guidelines that describe how to securely set up systems, software, and networks to reduce their exposure to cyber threats. They are created through a consensus process involving contributors from government, business, and industry, so they represent widely accepted best practices rather than one vendor's opinion. Organizations use them as reference points for hardening technologies such as operating systems, cloud platforms, and applications.

Formal definition

CIS Benchmarks are consensus-based, best-practice secure configuration guides developed and accepted by government, business, and industry participants through a community consensus process. Each benchmark provides prescriptive configuration recommendations for a specific target technology, spanning more than 100 benchmarks across roughly 25 technology categories, including operating systems, cloud provider environments (for example, Amazon Web Services), applications, and network devices. In practice, they function as hardening standards that map recommended settings to security objectives, and they are commonly referenced during configuration assessments, audits, and compliance-readiness efforts. A virtual CISO may direct the adoption or prioritization of relevant CIS Benchmarks as part of a governance and risk-reduction program, but implementation and ongoing enforcement of the configurations typically fall to operational teams, and applying a benchmark supports secure configuration rather than guaranteeing certification or breach prevention.

Why it matters

Misconfiguration is one of the most common and preventable causes of security exposure, and it often stems from systems being deployed with default or inconsistent settings rather than a hardened baseline. CIS Benchmarks matter because they give organizations a widely accepted, vendor-neutral reference for how to securely configure the technologies they already run, from operating systems to cloud environments such as Amazon Web Services. Because they are developed through a community consensus process involving government, business, and industry participants, they carry more weight than any single vendor's recommendations and can serve as a defensible starting point when an organization needs to demonstrate that its configuration choices reflect recognized best practice.

For security leaders, the value of CIS Benchmarks lies in turning an abstract goal like 'harden our systems' into prescriptive, technology-specific settings that can be assessed, tracked, and audited. They are frequently referenced during configuration assessments, audits, and compliance-readiness work, which makes them useful for organizations trying to bring consistency across a sprawling and diverse technology estate. With more than 100 benchmarks across roughly 25 technology categories, they cover much of what a typical organization deploys, reducing the need to invent internal hardening standards from scratch.

It is important to be precise about what adopting a benchmark does and does not achieve. Applying a CIS Benchmark supports secure configuration; it does not by itself guarantee certification, compliance, or breach prevention. The benchmarks are only effective when the recommended settings are actually implemented, validated against operational needs, and maintained over time, and their value depends heavily on the maturity of the teams responsible for enforcement.

Who it's relevant to

Virtual and fractional CISOs
Security leaders working across one or more client organizations can use CIS Benchmarks as a recognized reference to direct configuration hardening as part of a governance and risk-reduction program. The vCISO's role is typically to identify and prioritize the relevant benchmarks and integrate them into the security strategy, not to perform the hands-on configuration work, which usually sits outside the scope of an advisory engagement unless explicitly contracted.
IT and cloud operations teams
The teams responsible for deploying and maintaining operating systems, cloud environments such as Amazon Web Services, applications, and network devices are generally the parties who implement and enforce benchmark settings over time. Because CIS Benchmarks provide prescriptive, technology-specific recommendations, these teams can use them to establish and validate secure baselines, though they must reconcile recommended settings with operational requirements.
Compliance, audit, and risk stakeholders
Those preparing for audits or compliance-readiness efforts often reference CIS Benchmarks during configuration assessments as evidence of adherence to recognized secure configuration practice. Stakeholders should understand that using a benchmark supports readiness and defensible configuration choices but does not on its own constitute or guarantee certification or regulatory compliance.
Executives and organizational officers
Leadership accountable for security outcomes benefits from understanding that adopting CIS Benchmarks reflects widely accepted best practice rather than any single vendor's opinion. They should also recognize that accountability for configuration and security decisions remains with the organization and its officers, and that realized value depends on organizational maturity, cooperation from operational teams, and sustained enforcement.

Inside CIS Benchmarks

Technology-Specific Configuration Guidance
Detailed hardening recommendations tailored to a particular platform or product, such as an operating system, cloud service, browser, database, or network device, rather than generic advice.
Profile Levels
Tiered sets of recommendations, commonly a Level 1 profile focused on practical, low-disruption hardening and a Level 2 profile for environments requiring stronger, defense-in-depth configurations that may carry greater operational impact.
Rationale Statements
An explanation accompanying each recommendation that describes the security reason for the setting, helping teams weigh the change against operational needs.
Audit and Remediation Procedures
Steps to verify whether a system currently meets a recommendation (audit) and instructions to bring it into the recommended state (remediation).
Consensus Development Model
A community-driven process in which practitioners, vendors, and experts contribute to and review recommendations, distinguishing benchmarks from a single vendor's guidance.
Framework Mappings
References that relate benchmark recommendations to broader control sets such as the CIS Critical Security Controls, supporting alignment with wider security programs where applicable.

Common questions

Answers to the questions practitioners most commonly ask about CIS Benchmarks.

Does implementing CIS Benchmarks mean my organization is compliant with regulations like PCI DSS or HIPAA?
No. CIS Benchmarks are consensus-developed configuration hardening guidelines for specific technologies, and applying them is not the same as achieving regulatory compliance. Frameworks such as PCI DSS and HIPAA include requirements spanning governance, access management, monitoring, and documentation that extend well beyond system configuration. CIS Benchmarks can support readiness by strengthening the technical baseline that many controls depend on, but they typically map to only a portion of any regulatory or certification scheme. A virtual CISO advising on this distinction would generally position benchmarks as one input to a broader compliance program rather than as evidence of compliance.
Can I just apply every CIS Benchmark recommendation as-is across all my systems?
Not without evaluation. CIS Benchmarks are intentionally prescriptive, but many recommendations can affect application functionality, performance, or operational workflows, which is why the benchmarks themselves often distinguish between more foundational and more restrictive profile levels. Applying settings wholesale without testing may break legitimate business processes. In many engagements, a virtual CISO helps prioritize which recommendations align with the organization's risk tolerance and environment, and directs which should be tested, tailored, or formally excepted. The value of the exercise depends heavily on organizational context and validation rather than blanket application.
Where should an organization start when adopting CIS Benchmarks for the first time?
A common starting point is to inventory which technologies in the environment have corresponding benchmarks and to prioritize the systems that carry the greatest risk, such as those exposed to the internet or handling sensitive data. Many organizations begin with the more foundational profile level to establish a baseline before pursuing more restrictive settings. A virtual CISO typically advises on this prioritization and sequencing based on business risk, but the accountability for approving and operating the resulting configurations generally remains with the client organization. Progress also depends on access to system owners and accurate asset information.
How do CIS Benchmarks differ from the tasks a virtual CISO actually performs?
CIS Benchmarks are technical configuration standards, while a virtual CISO provides strategy, governance, risk prioritization, and executive-level guidance on how such standards fit into an overall security program. A vCISO generally does not perform the hands-on operational work of applying, scanning, or remediating benchmark settings unless that is explicitly contracted; those tasks usually fall to internal engineering teams or specialized service providers. It is a common mistake to expect security leadership to execute technical hardening directly. In practice the vCISO recommends which benchmarks to adopt and at what rigor, and validates that outcomes align with risk objectives.
How can an organization measure and maintain adherence to CIS Benchmarks over time?
Adherence is often assessed using automated configuration assessment tooling that compares system settings against the relevant benchmark and reports deviations. Maintaining adherence typically requires ongoing scanning, change management, and a process for documenting approved exceptions, because configurations drift as systems are patched, updated, or reprovisioned. A virtual CISO may help define how frequently assessments occur, how findings are prioritized, and how results are reported to leadership, but the operational execution of scanning and remediation generally sits with internal teams. Sustained value depends on organizational maturity and consistent follow-through rather than a one-time assessment.
How should exceptions to CIS Benchmark recommendations be handled?
When a specific recommendation cannot be applied due to business or technical constraints, the common practice is to document the exception, the rationale, any compensating controls, and an approval decision, then to review it periodically. This creates an auditable record and supports risk-based decision-making. A virtual CISO often advises on establishing this exception process and on evaluating the residual risk of each deviation, while the authority to accept that risk generally remains with the client organization and its officers. The effectiveness of an exception process depends on defined scope, stakeholder cooperation, and disciplined recordkeeping.

Common misconceptions

Applying CIS Benchmarks makes an organization compliant or certified against regulations such as HIPAA, PCI DSS, or ISO 27001.
CIS Benchmarks are configuration hardening guidelines, not a compliance certification. They can support readiness and reduce risk, and some recommendations may map to control frameworks, but adopting them does not by itself establish compliance or certification, which depend on the specific requirements and assessment processes of each standard.
Every CIS Benchmark recommendation should be implemented in full on all systems.
Benchmarks offer tiered profiles precisely because some settings can disrupt operations. Recommendations, especially Level 2 items, need to be evaluated against the environment's requirements, and applicability may vary by system role, technology version, and business context. A virtual CISO typically advises on prioritization and governance rather than mandating blanket application.
A virtual CISO who recommends CIS Benchmarks will also implement and maintain the configurations.
A virtual CISO generally provides strategy, governance, and prioritization guidance; hands-on configuration, tool administration, and ongoing hardening are typically operational tasks that fall to internal teams or contracted providers unless explicitly included in the engagement scope. Accountability for the resulting configuration decisions usually remains with the client organization.

Best practices

Select the benchmark version and profile level that match each technology and its role, rather than applying a single blanket standard across all systems.
Use the audit procedures to establish a baseline of current configurations before remediating, so changes are prioritized and measured against known starting points.
Evaluate each recommendation against operational impact, particularly Level 2 items, and document any exceptions with a rationale as part of your governance process.
Where relevant, use benchmark-to-framework mappings to connect hardening work to broader control objectives, while treating them as support for readiness rather than proof of compliance or certification.
Assign clear ownership for implementation and ongoing maintenance to internal or contracted operational teams, keeping strategic direction with security leadership and accountability with the client organization.
Reassess configurations periodically and after significant technology changes, since benchmarks are updated over time and applicability can shift with new versions.