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Cybersecurity Journey · NIST CSF 2.0

Protect: apply the safeguards that reduce your risk

The second phase of the Journey follows the Protect function of NIST CSF 2.0: with the priorities from the Identify phase, Vortex recommends, deploys, integrates and manages identity, data, platform and infrastructure safeguards, in IT and OT.

In short: The Protect phase of the Vortex Cybersecurity Journey follows the Protect function of NIST CSF 2.0, whose outcome is this: “Safeguards to manage the organization’s cybersecurity risks are used.” With the priorities from the roadmap of the Identify phase, Vortex recommends technologies in a vendor-agnostic way, based on technical, regulatory and financial criteria, deploys them with the leading cybersecurity vendors, integrates them into the environment and manages the operation with managed security services (MSS). The phase covers the function’s five categories: identity and access, awareness and training, data security, platform security and infrastructure resilience, in IT and OT. What protection does not prevent is detected and responded to in the Detect and Respond phase, by the Cyber Defense Center.

NIST CSF 2.0

What the Protect function asks for, and how Vortex delivers it

In NIST CSF 2.0, once assets and risks are identified and prioritized, the Protect function applies the safeguards that prevent or lower the likelihood and impact of adverse events. It has five categories.

CategoryWhat the framework asks forHow Vortex delivers it
Identity Management, Authentication, and Access Control (PR.AA)Identities and credentials of users, services and hardware managed; authentication commensurate with risk; access permissions defined in a policy, enforced and reviewed, with least privilege and separation of duties; physical access managed (PR.AA-01 to PR.AA-06)MFA and SSO for authentication; privileged access management (PAM), endpoint privilege management (EPM) and management of application and service secrets; access based on identity, device and context with ZTNA and NAC; in OT, remote access by vendors, technicians and operators controlled, authenticated and monitored. Physical access (PR.AA-06) is not part of the catalog
Awareness and Training (PR.AT)Personnel with the knowledge and skills to perform their tasks with cybersecurity risks in mind, including those in specialized roles (PR.AT-01 and PR.AT-02)Awareness platform with learning paths, and phishing simulations that measure the response rate and point out behavioral vulnerabilities. Tabletop exercises with leadership and technical teams are in the Identify phase (ID.IM). Training for specialized roles (PR.AT-02) is not part of the catalog
Data Security (PR.DS)Confidentiality, integrity and availability of data at rest, in transit and in use; backups created, protected, maintained and tested (PR.DS-01, PR.DS-02, PR.DS-10 and PR.DS-11)Data loss prevention (DLP); full disk encryption (FDE); visibility and control over SaaS use (CASB); governance of who accesses which data, with permission auditing and recertification. Data discovery and classification are in the Identify phase (ID.AM). Backup and restore (PR.DS-11) are not part of the catalog
Platform Security (PR.PS)Configuration management; software and hardware maintained, replaced and removed commensurate with risk; log records generated for continuous monitoring; installation and execution of unauthorized software prevented; secure software development (PR.PS-01 to PR.PS-06)Hardening review and support; patch management; protection of endpoints (EPP and EDR), mobile devices (MDM) and, in OT, industrial devices (OT-EDR); cloud and workload posture and protection (CSPM and CNAPP); DevSecOps and container security. Logs go to the Cyber Defense Center SIEM, in the Detect and Respond phase. EDR and OT-EDR also detect and contain attacks (DE.CM-09 and RS.MI-01)
Technology Infrastructure Resilience (PR.IR)Networks and environments protected from unauthorized logical access and usage; protection from environmental threats; resilience mechanisms in normal and adverse situations; adequate resource capacity to ensure availability (PR.IR-01 to PR.IR-04)Next-generation firewall (NGFW) and rule base auditing; micro-segmentation; SASE, web gateway, and web browsing and email security; WAF, API security and bot management for exposed applications; DDoS protection for availability; in OT, segmentation and traffic control between industrial zones. Protection from environmental threats (PR.IR-02) is not part of the catalog

Categories and subcategories summarized by Vortex from NIST CSWP 29, The NIST Cybersecurity Framework (CSF) 2.0, February 26, 2024 (official text).

How Vortex does it

From roadmap to managed protection

Each safeguard goes through four steps, in the order of priority that the Identify phase defined: recommend, deploy, integrate and manage.

  1. Recommend

    Which safeguard reduces your risk?

    What you get

    • Priorities from the Identify phase roadmap
    • Assessment of the environment, the challenges and the existing architecture
    • Vendor-agnostic recommendation, based on technical, regulatory and financial criteria
  2. Deploy

    How do you put the safeguard in place?

    What you get

    • Deployment with the leading cybersecurity vendors
    • Configuration reviewed against hardening benchmarks
    • In OT, zone segmentation and controlled remote access
  3. Integrate

    Do the safeguards work in your context?

    What you get

    • Integration prioritizing fit and efficiency in your environment
    • Access based on identity, device and context
    • Logs ready for monitoring in the Detect and Respond phase
  4. Manage

    Who keeps protection working?

    What you get

    • Managed security services (MSS): solutions operated by Vortex
    • Patch management and firewall rule auditing
    • Continuous awareness, with phishing simulations

Priorities come from the Identify phase, and what protection does not prevent is detected and responded to in the Detect and Respond phase, by the Cyber Defense Center.

Protect: implementing effective defenses to reduce cyber risks

  • The goal Once risks have been identified and the cybersecurity strategic plan has been defined, the Protect phase is dedicated to implementing the safeguards that will strengthen your organization’s security posture. The goal is to prevent or minimize the impact of cyber events, ensuring operational continuity with resilience and control.
  • How we work At Vortex Security, we work in a vendor-agnostic way to recommend and implement security solutions, always based on your context, industry and strategic goals. We work in partnership with the leading cybersecurity vendors and, through our managed security services (MSS), we ensure that each solution is implemented, integrated and operated effectively.
  • What the phase covers This phase includes protecting network, cloud, endpoint and application infrastructure, secure identity and access management, data protection, vulnerability remediation and user training. The result is a continuous layer of defense against cyber threats, with visibility and control.

Technologies and services in the Protect phase

Grouped by the five categories of the NIST CSF 2.0 Protect function. EDR and OT-EDR sit with endpoint protection and also feed detection and containment by the Cyber Defense Center (DE.CM-09 and RS.MI-01), in the Detect and Respond phase.

Identity and access (PR.AA) 8

Identity and access (PR.AA)

Multi-Factor Authentication (MFA)

Multi-Factor Authentication is an additional layer of protection that requires multiple forms of verification to authenticate user access. By combining something the user knows (password), has (token) or is (biometrics), the solution makes unauthorized access harder, even when credentials have been leaked.

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Awareness and training (PR.AT) 2

Data security (PR.DS) 4

Platform security (PR.PS) 10

Infrastructure resilience (PR.IR) 12

Vortex works in a vendor-agnostic way: technologies are recommended by the diagnostic, according to each organization’s environment and risks.

Go deeper

Service and guides

Security Integration

Vendor-agnostic recommendation, deployment, integration and management of security technologies for network, cloud, endpoint, identity, applications, data and OT.

Discover the service

Cybersecurity glossary

Zero trust, MFA, DLP, EDR and other security terms, defined in plain language, with sources.

Open the glossary (PT)

Guide: IEC 62443, ANEEL 964 and ONS

What ANEEL’s REN 964 and the ONS routine require, how IEC 62443 fits in, and a practical checklist.

Read the guide (PT)

Frequently asked questions

What does the Protect function cover in NIST CSF 2.0?

The outcome of the Protect function is this: “Safeguards to manage the organization’s cybersecurity risks are used.” Once assets and risks are identified and prioritized, it secures those assets to prevent or lower the likelihood and impact of adverse events. It has five categories: Identity Management, Authentication, and Access Control (PR.AA); Awareness and Training (PR.AT); Data Security (PR.DS); Platform Security (PR.PS); and Technology Infrastructure Resilience (PR.IR) (NIST CSF 2.0).

What is zero trust?

Zero trust is the security model that grants no implicit trust to a user, device or account because it is on the internal network or belongs to the company: each access to a resource is authenticated and authorized beforehand, with least privilege (NIST SP 800-207). The principle is “never trust, always verify.” In the Protect phase, the model appears in Zero Trust Network Access (ZTNA), for remote and internal access to applications and systems, and in micro-segmentation, which limits lateral movement in the internal environment, with MFA and privileged access management (PAM) in identity and access control.

Is compliance part of the Protect phase?

In NIST CSF 2.0, understanding and managing legal, regulatory and contractual cybersecurity requirements is part of the Govern function (GV.OC-03). In the Vortex Journey, this is in the Identify phase, with preparation for Brazil’s LGPD (General Data Protection Law), PCI-DSS and ISO/IEC 27001, verification of policy compliance and the development of policies and standards. The Protect phase implements the safeguards that these requirements call for.

Why is EDR in the Protect phase?

Because, in the Vortex Journey, EDR is deployed together with endpoint protection, alongside EPP, patch management and MDM. Once deployed, what it does also belongs to the Detect and Respond functions of NIST CSF 2.0: monitoring endpoints to find adverse events (DE.CM-09) and containing incidents (RS.MI-01). That is why EDR is one of the sources of the Cyber Defense Center MDR, together with SIEM, NDR and XDR. The same applies to OT-EDR, on industrial devices.

What are managed security services (MSS)?

It is the model in which Vortex operates the company’s security solutions, in addition to deploying them. In the Protect phase, Vortex recommends technologies in a vendor-agnostic way, based on technical, regulatory and financial criteria, deploys them with the leading cybersecurity vendors, integrates them into the environment and manages the operation, so that each solution is implemented, integrated and operated effectively. Security Integration details the service.

How does the Protect phase handle the OT environment?

With three safeguards specific to industrial environments: segmentation and traffic control of OT networks, which isolate critical zones and block improper communications; secure remote access, which controls, authenticates and monitors connections by vendors, technicians and operators; and OT-EDR, on industrial devices. Priorities come from the passive inventory and the OT Risk Assessment of the Identify phase, by physical impact on the process.

Start with what to protect first

Tell us a little about your environment and your priorities. A Vortex specialist will get back to you to recommend the safeguards and the management model.

  • Vendor-agnostic technology recommendations
  • Deployment with the leading vendors
  • Ongoing management with managed security services (MSS)

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