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How to Use NIST’s Cybersecurity Framework to Foster a Culture of Cybersecurity – Security Boulevard

Global news BCyber todayMarch 27, 2020 26

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Faced with increasing volume and sophistication of cyber threats, CISOs and security teams need to find ways to garner greater executive support and meaningful budgets to keep their organizations safe. However, recent research reveals that many CISOs aren’t getting the support that they need, and it’s one of the top reasons why they switch jobs more often than any other role in the C-suite. 

According to research conducted by Korn Ferry (via The Wall Street Journal) on the length of tenure of the top 1,000 U.S. companies’ C-suites, average tenure across the entire C-suite was 5.3 years. However, the average tenure of a CIO is lower, at 4.3 years. A survey conducted by Nominet Cyber Security shows that a CISO’s average tenure is about half of that of a CIO. 

While it’s easy to assume that CISOS have shorter tenures because they’re taking a hit as the bearer of bad news (e.g., fired after a data breach), research shows this isn’t the only reason. A research report conducted by the Enterprise Strategy Group (ESG) and ISSA in April 2019 found that the most common reasons that security officers quit include the following: 

In 2020, it is not unusual for an organization to have a disconnect between the C-suite and the technical implementation staff concerning risk tolerance. And to make things worse, the organization is often unaware it has this problem. 

Unless the entire organization is aligned concerning its risk tolerance level, it’s difficult for security executives to secure budgets that are realistic to the risk associated with the company’s size, industry or business model. 

However, with a definitive, universal understanding of what an organization’s governance considers an acceptable level of risk in place, it becomes simple for security leaders to acquire the resources needed to improve cyber resilience.  

What could security professionals do to transform a discussion about risks and risk tolerance objectives from implicit to explicit? 

In this article, we’ll discuss the NIST cybersecurity Framework — a tool security leaders can use to foster a definitive, organization-wide understanding about what an organization’s governance considers an acceptable level or risk. 

Whether you work for a three-year-old company or a hundred-year-old company, the NIST cybersecurity framework is a tool you can lever to assess enterprise-wide risks and foster  internal dialogues to align your whole organization on its risk tolerance objectives. This in turn will help your team set better security priorities and secure the budget needed to adequately mitigate IT risks. 

Overview of NIST Cybersecurity Framework 

The Framework provides a common language and methodology for managing cybersecurity risk and helps guide key decisions about risk management activities through the various levels of an organization from senior executives, to business and process level, and implementation as well. NIST standards are based on best practices from several security documents, organizations, and publications (e.g. ISO 27001, COBIT 5, etc.). 

Because the framework is designed to be outcome driven (as opposed to prescriptive), it works for organizations of all sizes, industries, and maturities. Thus, whether you’re just getting started in establishing a cybersecurity program or you’re already running a fairly mature program, the framework can provide value — by acting as a top level security management tool that helps  assess cybersecurity risk across the organization.  

Key Terminology of the Framework 

The Cybersecurity Framework is made of three major components: 

Implementation Tiers: The Framework also consists of 4 implementation tiers that describe the degree to which an organization’s cybersecurity risk management practices exhibit the characteristics defined in the Framework. The tiers range from Partial (Tier 1) to Adaptative (4) and describe an increasing degree of rigor and how well integrated cybersecurity risk decisions are into broader risk decisions, and the degree to which the organization shares and receives cybersecurity info from external parties.   

Framework Core. A set of cybersecurity activities and references that is common across critical infrastructure sectors and organized around particular outcomes. The Framework Core comprises four types of elements: Functions, Categories, Subcategories, and Informative References.

Functions. One of the main components of the Framework, Functions provide the highest level of structure for organizing basic cybersecurity activities into Categories and Subcategories. The five Functions are Identify, Protect, Detect, Respond, and Recover.

Categories  The subdivisions of a Function into general groups of cybersecurity outcomes, closely tied to programmatic needs and particular activities. Examples of Categories include Asset Management, Access Control, and Detection Processes.

Subcategories. The subdivision of a Category into specific outcomes of technical and management activities. Think of sub-categories as outcome-driven statements that provide considerations for creating or improving a cybersecurity program. 

Examples of Subcategories include: 1) External information systems are cataloged, 2) Data-at-rest is protected, 3) and Notifications from detection systems are investigated.

Framework Profiles. Profiles are an organization’s unique alignment of their firm’s requirements and objectives, risk appetite, and resources against the desired outcomes of the Framework Core. Profiles can be used to identify opportunities for improving cybersecurity posture by comparing a current profile (the “as is” state) with a target profile (the “to be” state).

There isn’t a right or wrong way to approach the profiles. But one way to approach it is to map your organization’s cybersecurity requirements, mission objectives, operating methodologies, and current practices against the subcategories of the Framework Core to create a Current-State Profile. 

In addition to these components, NIST has also provided a framework for clarifying the communication roles for each level within an organization. 

Executive level responsibilities: This level communicates the mission priorities, available resources, and overall risk tolerance to the business/process level. 

The business/process level responsibilities: This level uses the information as inputs into the risk management process and then formulates a profile to coordinate implementation/operation activities. 

The implementation/operations level responsibilities: This level communicates the Profile implementation progress to the business/process level. The business/process level uses this information to perform an impact assessment. Business/process level management reports the outcomes of that impact assessment to the executive level to inform the organization’s overall risk management process and to the implementation/operations level for awareness of business impact.”

How the NIST Cybersecurity Framework Can Be Applied  

Several organizations have leveraged the Framework to create a risk heat map for their critical business functions, and through the process drove organization-wide alignment on risk tolerance and prioritization. Below is the story of how Intel has utilized the Framework to achieve meaningful outcomes.  

Intel Case study 

Intel used the framework to create a risk heat map that can be used to set risk tolerance baselines, identify areas that need more detailed or technical assessments, identify areas of underinvestment and overinvestment, and assist in risk prioritization. 

Intel divided their computer infrastructure into five critical business functions and piloted the Framework to perform an initial high level risk assessment for one business function. They conducted the project in four phases: 

This process brought the organization several benefits. One of the most valuable was the internal dialogues it helped foster — risk conversations became grounded in a shared understanding of the threats, vulnerabilities, and impacts the organization faces, and the organization gained improved visibility into their strengths and opportunities to improve. All of this helps the organization set better security priorities, and better deploy budgets and security solutions. And best of all, all of these results were achieved with a cost of under 175 FTE (full-time-employee) hours. 

Parting Thoughts

If you’re interested in improving how your organization identifies, detects, responds to, and recovers from cyber risk, the NIST Cybersecurity Framework is a solid tool to incorporate into your risk management practices. To maximize the benefits to your organization, you’ll need to tailor the framework to meet your specific business processes and priorities, start where you’re comfortable, and commit to iterations with decision-makers throughout the process.

Lastly, it’s worth remembering that cyber risk management is not an end result, but an ongoing process of iteration and dialogue about risk.

*** This is a Security Bloggers Network syndicated blog from Hyperproof authored by Jingcong Zhao. Read the original post at: https://hyperproof.io/nist-cybersecurity-framework/

This content was originally published here.

Written by: BCyber

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