The Center for Internet Security (CIS) is the nonprofit steward of the CIS Controls and CIS Benchmarks, practical standards used worldwide to prioritize and harden defenses. Practitioners rely on these prioritized safeguards and vendor-specific configuration guides to shrink attack surface without guesswork. The sections below walk through the Controls, the Benchmarks, the tools CIS publishes, and how membership and automation speed up adoption.
TL;DR:
- Start with IG1, then add IG2 and IG3 as risk and resources grow; CIS maps the Controls to NIST, HIPAA, and PCI DSS.
- For a 90 day rollout, inventory assets first, close access and configuration gaps by week six, then establish vulnerability management and log collection.
- The Controls, Benchmarks, and basic assessment tool are free; SecureSuite is needed for broader automated scanning, consolidated reporting, updated assessment content, and member support.
- Teams on version 8 can move to version 8.1 without a disruptive rewrite; the update aligns with NIST CSF 2.0 and refreshes safeguard descriptions.
- MS-ISAC primarily serves state, local, tribal, and territorial governments, offering members continuous security monitoring and incident response rather than isolated assessments.
Table of Contents
- Our Overview of CIS's Mission and Role in Cybersecurity
- The History and Governance Behind CIS Credibility
- CIS Controls and CIS Benchmarks: What They Are and How We Use Them
- Putting CIS Controls v8.1 and IG1 Into Practice
- CIS-CAT, SecureSuite, and Hardened Images Explained
- MS-ISAC, SOC Services, and Member Support
- Getting Started: Downloads, Membership, and Internal Buy-In
- Our Take on Making CIS Work in a Real Compliance Program
- How Automation Helps You Turn CIS Evidence Into Faster Answers
- FAQ
- Sources
Our Overview of CIS's Mission and Role in Cybersecurity
CIS exists as a 501(c)(3) nonprofit built around a community-driven model rather than a commercial one. That structure matters to us because it keeps the guidance vendor-agnostic: no single software vendor shapes the recommendations, and no license fee gates the baseline Controls.
The organization's outputs sit alongside, rather than compete with, government cybersecurity efforts. CISA's own Cross-Sector Cybersecurity Performance Goals point to the CIS Controls as complementary, prioritized, risk-informed baselines rather than a replacement for regulatory frameworks.
A few traits define how CIS operates:
- Nonprofit, mission-driven funding model with no vendor lock-in.
- Consensus-based development pulling from thousands of volunteer practitioners.
- Outputs designed to be mapped onto existing compliance programs, not to replace them.
The History and Governance Behind CIS Credibility
CIS was founded in 2000 and has grown from a small set of volunteer-authored benchmarks into a global reference point for hardening guidance. The organization is headquartered in East Greenbush, New York, and today employs over 500 people, a scale that reflects how far the mission has traveled from its original benchmark-sharing roots.
Governance still runs on the same volunteer backbone that built the first benchmarks. Working groups made up of practitioners from industry, academia, and government review and update each standard, which is part of why the output earns trust across sectors that otherwise rarely agree on tooling.
What keeps the model credible over two decades:
- A board and community structure that outlasts any single sponsor or vendor relationship.
- Volunteer working groups that bring real operational experience into every revision.
- A consensus requirement that slows releases but keeps guidance broadly applicable.
CIS Controls and CIS Benchmarks: What They Are and How We Use Them
CIS publishes two distinct but complementary bodies of work, and conflating them is one of the most common mistakes we see teams make early in adoption.
- CIS Controls are a prioritized set of Safeguards aimed at reducing the most prevalent attack techniques, organized into Implementation Groups IG1 through IG3 so organizations can scale effort to their risk profile and resources. IG1 is described as essential cyber hygiene, the recommended starting point for every enterprise regardless of size.
- CIS Benchmarks are prescriptive, vendor-specific configuration guides, covering operating systems, cloud platforms, and applications, that tell administrators exactly which settings to change to harden a given system.
In practice, the Controls answer "what should our program prioritize" at a governance level, while the Benchmarks answer "how do we configure this specific server or image" at a technical level. A security team typically uses the Controls to build its roadmap and reporting structure, then pulls the matching Benchmark when it's time to actually lock down a Windows Server build, a Linux distribution, or a cloud workload.
Pro Tip: Start every new system build from the relevant CIS Benchmark rather than retrofitting hardening after deployment. It's far cheaper to configure correctly once than to remediate later.
Putting CIS Controls v8.1 and IG1 Into Practice
CIS Controls v8.1 is an iterative update, not a rewrite. It aligns the Controls with NIST CSF 2.0's added "Govern" function and refreshes asset classes and safeguard descriptions, along with mappings to other frameworks. For teams already running v8, the update is additive rather than disruptive.
Because CIS Controls are mapped to NIST SP 800-53, NIST CSF, HIPAA, and PCI DSS among others, a single implementation effort can satisfy multiple compliance obligations at once, which is one of the strongest arguments for starting with CIS rather than building a framework from scratch.
A compact 90-day IG1 sequence we'd recommend:
- Weeks 1 to 2: inventory assets and software, the foundation every later Safeguard depends on.
- Weeks 3 to 6: close access control and secure configuration gaps identified against IG1 Safeguards.
- Weeks 7 to 10: establish continuous vulnerability management and audit log collection.
- Weeks 11 to 12: document evidence and map completed Safeguards to your compliance frameworks of record.
IG1 is positioned as the baseline every enterprise should implement first, with IG2 and IG3 building on top of it as risk and resources grow. For a fuller walkthrough, our 90-day IG1 roadmap for practitioners breaks each phase into specific tasks.
CIS-CAT, SecureSuite, and Hardened Images Explained
CIS backs its written guidance with tooling that automates the actual assessment work. CIS-CAT Pro is the fuller automation and reporting engine available to SecureSuite members, while CIS-CAT Lite is a limited public version anyone can download to spot-check a handful of systems.
Three resources worth knowing before you decide how deep to go:
- CIS-CAT Lite: free, limited functionality, useful for a quick first look at a system's configuration against a Benchmark.
- CIS-CAT Pro: exclusive to SecureSuite members, with broader automated scanning and consolidated reporting across many assets.
- CIS Hardened Images: pre-configured, benchmark-aligned machine images for cloud workloads, which cut the time needed to stand up a compliant server from scratch.
SecureSuite membership is what unlocks the Pro-tier tooling, along with ongoing access to updated assessment content and member support, so the decision to join usually comes down to how many systems you need to assess on a recurring basis.
MS-ISAC, SOC Services, and Member Support
CIS also runs MS-ISAC, the Multi-State Information Sharing and Analysis Center, built primarily for state, local, tribal, and territorial (SLTT) government entities. Membership brings access to 24x7 SOC monitoring and incident response support tailored to that community's operational realities.
Beyond MS-ISAC, CIS extends member-only operational services such as MCAP, aimed at helping organizations get more structured support around assessment and response. Together these programs mean CIS's role extends past publishing documents: it operates real detection and response capability for the members who rely on it.
- MS-ISAC membership centers on SLTT government organizations and community partners.
- SOC and incident response services give members continuous monitoring rather than a one-time assessment.
- MCAP and related programs add specialized, member-facing operational support on top of the baseline services.
Getting Started: Downloads, Membership, and Internal Buy-In
Most teams can start today without spending anything. The Controls, the Benchmarks, and CIS-CAT Lite are all public downloads, which makes a first self-assessment possible before any budget conversation happens.
- Download the current CIS Controls and the Benchmarks relevant to your operating systems and cloud platforms.
- Run CIS-CAT Lite against a representative sample of systems to see where configuration drift already exists.
- Use the gap findings to build the business case for SecureSuite membership if your asset count or reporting needs to outgrow the free tooling.
- Track progress against IG1 first, then present completed Safeguards to leadership mapped to whichever compliance framework they already care about.
Internally, framing IG1 completion as a concrete, finite list rather than an open-ended security initiative tends to get faster executive sign-off. Our information security checklist guidance covers how to turn that list into something you can report on monthly.
Our Take on Making CIS Work in a Real Compliance Program
In our experience helping teams respond to security assessments, CIS Controls rarely live alone. They sit inside a stack that also includes NIST CSF, SOC 2, and whatever a given client's due diligence questionnaire asks for, and the real work is keeping all of that evidence consistent across frameworks rather than mastering any single one.
The friction we see most often isn't understanding the Controls themselves. It's reproducing the same hardening evidence, over and over, across different questionnaires and auditors who each phrase the same question differently.
— Gaspard
How Automation Helps You Turn CIS Evidence Into Faster Answers
Once your IG1 Safeguards are documented, the next challenge is usually sharing that evidence efficiently with auditors, customers, and vendor risk teams who each send their own questionnaire format. That's where we come in.
Our Questionnaire Automation Tool reads your CIS Control documentation and past answers, then drafts responses to incoming security questionnaires with a confidence score on each answer. For teams running fiduciary-grade due diligence reviews, our DDQ automation applies the same approach to those longer, more detailed forms.
- A customizable Trust Center lets you publish your CIS-aligned posture once instead of re-answering it per request.
- Real-time collaboration means teams work from the same answer set instead of duplicating effort.
- Integrations with third-party risk platforms help keep your evidence current wherever a reviewer looks for it.
See current plans on our pricing page, or start with a demo to see how your own Control evidence could plug in.
FAQ
What is CIS in network security?
CIS, the Center for Internet Security, is a nonprofit that publishes the CIS Controls and CIS Benchmarks, prioritized safeguards and vendor-specific configuration guides used to reduce common attack vectors. Network teams use the Benchmarks to harden specific devices and the Controls to prioritize which defenses to build first.
What are the Center for Internet Security CIS Controls?
The CIS Controls are a prioritized set of Safeguards organized into Implementation Groups IG1 through IG3, designed to reduce the most prevalent cybersecurity risks. IG1 covers essential cyber hygiene and is the recommended starting point for any organization.
What is the CIS Center of information security?
It's a U.S.-based 501(c)(3) nonprofit, founded in 2000, that develops community-driven, consensus-based cybersecurity standards, most notably the CIS Controls and Benchmarks. It also operates MS-ISAC and member services like SOC monitoring for government and community partners.
Is CIS or NIST better?
They aren't competitors: CIS Controls are explicitly mapped to NIST CSF and other frameworks, so most programs use both together. CISA's own guidance treats CIS Controls as a prioritized, practical complement to NIST-based programs rather than an alternative to choose instead.
Do I need SecureSuite membership to use CIS resources?
No. The CIS Controls, Benchmarks, and CIS-CAT Lite are publicly available for free, while SecureSuite membership unlocks CIS-CAT Pro's fuller automation, reporting, and member support for organizations assessing many systems.