CISO Tribune

Vendor comparison · 2 companies

Forescout vs Phosphorus Cybersecurity

Forescout sells the Vistaro platform, which delivers Universal Zero Trust Network Access, OT security, and continuous exposure management. Phosphorus Cybersecurity sells security for xIoT cyber-physical devices that covers discovering, hardening, monitoring and remediating those devices, with automated controls and zero-touch deployment. CISO Tribune files both under IoT and medical device security and OT and ICS security. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • Forescout
  • Phosphorus Cybersecurity
Forescout vs Phosphorus Cybersecurity: Products, Customers and Funding Compared
ForescoutForescout sells the Vistaro platform, which delivers Universal Zero Trust Network Access, OT security, and continuous exposure management.forescout.comPhosphorus CybersecurityPhosphorus Cybersecurity sells security for xIoT cyber-physical devices that covers discovering, hardening, monitoring and remediating those devices, with automated controls and zero-touch deployment.phosphorus.io
What it sells
  • Forescout VistaroA platform that continuously discovers, assesses, controls, and governs every connected asset across IT, IoT, IoMT, and OT.
  • VistaroAI[1][5]An agentic AI suite that analyzes asset intelligence, exposure changes, threat context, and policy posture.
  • Forescout eyeFocusAn asset intelligence solution built on risk-based prioritization and persistent asset intelligence.
  • Forescout eyeSentryA cloud-native platform for Continuous Threat and Exposure Management.
  • Forescout SRAA controlled remote access layer for critical systems.
  • xIoT asset discovery[1]Discovers and classifies connected xIoT devices across an organization's network.
  • xIoT vulnerability assessment[1]Assesses discovered xIoT devices for security vulnerabilities.
  • Global device network[1]A network resource used to support identification and assessment of connected devices.
  • Password management[1][2]Manages and rotates credentials used on xIoT devices to harden them against attack.
  • Firmware management[1]Manages firmware on xIoT devices to remediate known vulnerabilities.
  • Certificate management[1]Manages digital certificates used on xIoT devices as part of device hardening.
Categories
Headquarters
Not stated on its pagesNot stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Not stated on its pagesOwned by Dragos[1]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • August 13, 2026Forescout and Crytica Security announced a partnership that combines rapid detection with asset intelligence to close visibility gaps.[2]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: listed, seen October 24, 2026[3]
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
The pages also address public sector IT and security professionals. They describe healthcare organizations that give clinicians, caregivers, research organizations and contractors network access while using agentless medical devices. They name global manufacturers, energy providers, MoDs, and critical infrastructure operators as users of the platform. Deployment options cover on-premises installations, virtual machines and Docker-based containerized deployments.From its own pages, Phosphorus Cybersecurity sells xIoT security to financial services organisations. Phosphorus Cybersecurity sells a unified xIoT security management platform to operators of OT, ICS and IIoT cyber-physical systems. Phosphorus Cybersecurity sells xIoT security for modern data centers. The devices Phosphorus Cybersecurity addresses are the Things of the enterprise xIoT environment.
Last verified
November 9, 2026November 4, 2026

Where they overlap

  • Forescout and Phosphorus Cybersecurity are both filed under IoT and medical device security and OT and ICS security.

Where they differ, field by field

  • Forescout's primary category is Network access control; Phosphorus Cybersecurity's is IoT and medical device security.
  • Phosphorus Cybersecurity is also filed under Firmware and device supply chain security.
  • Forescout lists Forescout Vistaro, VistaroAI, Forescout eyeFocus, Forescout eyeSentry and Forescout SRA. Phosphorus Cybersecurity lists xIoT asset discovery, xIoT vulnerability assessment, Global device network, Password management, Firmware management and 1 more.
  • Phosphorus Cybersecurity is owned by Dragos.

What it sells: Forescout

What Forescout Vistaro does
Forescout Vistaro delivers Universal Zero Trust Network Access, OT security, and continuous exposure management. It analyzes 800+ data points from activity logs, threat intelligence, compliance, identity management, SIEMs and more to orchestrate policy enforcement. It offers options for on-premises installations, virtual machines and Docker-based containerized deployments.
What VistaroAI does[1][5]
VistaroAI is an agentic AI suite purpose-built for cybersecurity. VistaroAI puts the right work in front of the right people, automatically.
What Forescout eyeFocus does
Forescout eyeFocus keeps contextualized asset data in a searchable 90-day persistent asset inventory. It calculates a multifactor risk score based on configuration, function and behavior. It correlates Common Vulnerabilities and Exposures to the CISA Known Exploited Vulnerabilities catalog.
What Forescout SRA does
Forescout SRA governs how users connect to critical systems, what they can reach, and what can happen during the session. Forescout SRA supports on-prem, cloud, and hybrid deployments with options for appliances, virtual machines, and containers on existing hardware.

Questions about Forescout and Phosphorus Cybersecurity

What do Forescout and Phosphorus Cybersecurity sell?
Forescout sells Forescout Vistaro, VistaroAI, Forescout eyeFocus, Forescout eyeSentry and Forescout SRA. Phosphorus Cybersecurity sells xIoT asset discovery, xIoT vulnerability assessment, Global device network, Password management, Firmware management and 1 more.
Are Forescout and Phosphorus Cybersecurity in the same category?
They share IoT and medical device security and OT and ICS security. Forescout's primary category is Network access control and Phosphorus Cybersecurity's is IoT and medical device security.
Who owns Forescout and Phosphorus Cybersecurity?
Phosphorus Cybersecurity is owned by Dragos.
Who are Forescout and Phosphorus Cybersecurity sold to?
The pages also address public sector IT and security professionals. From its own pages, Phosphorus Cybersecurity sells xIoT security to financial services organisations.
What have Forescout and Phosphorus Cybersecurity announced recently?
August 13, 2026: Forescout and Crytica Security announced a partnership that combines rapid detection with asset intelligence to close visibility gaps.

About Forescout

Forescout sells the Vistaro platform, which delivers Universal Zero Trust Network Access, OT security, and continuous exposure management. Forescout Vistaro continuously discovers, assesses, controls, and governs every connected asset across IT, IoT, IoMT, and OT. Forescout's platform includes skills-based agentic AI, generative AI, and ML, with human-in-the-loop control across discovery, analysis, and response. VistaroAI continuously analyzes asset intelligence, exposure changes, threat context, and policy posture, then puts the right work in front of the right people, automatically. Forescout integrates with hundreds of security and IT products.[1][4][6][7][10][13]

Forescout assigns devices to appropriate VLANs or applies access control lists based on predefined policies. Forescout's agentless controls enforce access policies without requiring software installations on devices. The Forescout Device Cloud has over 12 million device fingerprints and provides device classification.[6]

Forescout delivers adaptive Universal Zero Trust Network Access for IT, IoT, IoMT, and OT, on-premises and remote. Forescout Vistaro analyzes 800+ data points from activity logs, threat intelligence, compliance, identity management, SIEMs and more to orchestrate policy enforcement among PEPs. Forescout Vistaro lets users simulate segmentation designs using actual traffic flows and risk overlays to validate controls, fine-tune policies, and flag violations before enforcement. Forescout has contributed to NIST SP 1800-35 Zero Trust Architecture reference implementations.[7]

Forescout's exposure management continuously discovers, assesses, and prioritizes cyber risk across the entire connected asset estate, with automated compliance to NIST CSF, IEC 62443, and HIPAA. Forescout exposure management uses multi-factor scoring based on configuration, behavior, and threat intel, including KEVs, EPSS, and IoCs. Forescout eyeFocus is an asset intelligence solution that provides the foundation for understanding the security posture of an attack surface, through Agentic AI, risk-based prioritization, and persistent asset intelligence. Forescout eyeFocus keeps contextualized asset data in a searchable 90-day persistent asset inventory to track changes in configuration and risk posture over time. Forescout eyeFocus calculates a multifactor risk score based on configuration, function and behavior. Forescout eyeSentry is a cloud-native platform for Continuous Threat and Exposure Management.[8][9]

Forescout provides in-depth OT/ICS network visibility, real-time threat detection and cyber risk mitigation. Forescout supports passive discovery, active queries, direct infrastructure integration or APIs across IT, OT, IoT, IoMT, and BAS systems. Forescout detects and manages unpatched systems using a curated vulnerability database enriched with EPSS, CISA KEVs, and Vedere Labs threat intelligence. Forescout integrates over 180 data sources to bridge the divide between IT and OT. LAN CP maps network communication flows and detects anomalies such as undesired hosts, irregular communication patterns, and unexpected process commands. Vedere Labs uncovers emerging threats and feeds purpose-built intelligence directly into the Forescout platform.[6][10][11]

Forescout SRA is a controlled access layer that governs how users connect to critical systems, what they can reach, and what can happen during the session. Forescout SRA supports on-prem, cloud, and hybrid deployments with options for appliances, virtual machines, and containers on existing hardware. Forescout Vistaro combines a wide range of discovery techniques with cloud-powered intelligence for every medical device connected to a clinical network. Forescout Vistaro automates the discovery, assessment and control of every connected device, including vulnerable IoT assets that are increasingly exploited to gain network access. Forescout discovers and tracks which devices are not PQC compliant.[4][6][7][10][12]

Forescout Vistaro offers options for on-premises installations, virtual machines and Docker-based containerized deployments. Forescout sensors can be configured as active sensors that query network infrastructure. Global manufacturers, energy providers, MoDs, and critical infrastructure operators use the Forescout platform. Forescout states that its customer data includes more than 300 healthcare providers. Forescout's detection system is built on over 20 years of field experience and operates across IT, IoT, OT, BAS and IoMT environments.[6][7][8][10][11][12]

Forescout on the record

Sources

Forescout full record

  1. [1]PlatformForescout · forescout.com · published August 17, 2026 · Tier A
  2. [2]Crytica Security and Forescout Announce Integration to Strengthen Cyber Resilience for Critical InfrastructureBusiness Wire · published August 13, 2026 · Tier A
  3. [3]Forescout Platform Reviews 2026: Details, Pricing, & Features | G2G2 · undated page, accessed October 24, 2026 · Tier C
  4. [4]Forescout – Manage cyber risk and mitigate threats, continuously.Forescout · undated page, accessed November 10, 2026 · Tier A
  5. [5]The Forescout Vistaro™ PlatformForescout · undated page, accessed November 10, 2026 · Tier A
  6. [6]Network Access Control Security Software SolutionsForescout · undated page, accessed November 10, 2026 · Tier A
  7. [7]Universal Zero Trust Network Access for Every Device, EverywhereForescout · undated page, accessed November 10, 2026 · Tier A
  8. [8]Exposure ManagementForescout · undated page, accessed November 10, 2026 · Tier A
  9. [9]Forescout eyeFocusForescout · undated page, accessed November 10, 2026 · Tier A
  10. [10]OT Security Platform & Security Software ToolsForescout · undated page, accessed November 10, 2026 · Tier A
  11. [11]Cyber Threat Detection & Response Software SolutionsForescout · undated page, accessed November 10, 2026 · Tier A
  12. [12]Medical Device Cybersecurity Software PlatformForescout · undated page, accessed November 10, 2026 · Tier A
  13. [13]Network Security Software Tools & SolutionsForescout · undated page, accessed November 10, 2026 · Tier A

Phosphorus Cybersecurity full record

  1. [1]phosphorus.ioPhosphorus Cybersecurity · phosphorus.io · undated page, accessed November 4, 2026 · Tier A
  2. [2]xIoT Cyber-Physical Security Platform | PhosphorusPhosphorus · undated page, accessed November 10, 2026 · Tier A
  3. [3]"Lax cybersecurity the norm on xIoT" - PhosphorusPhosphorus · published January 9, 2023 · Tier A
  4. [4]TheStreet: Downloading the Wrong Apps Could Get You Hacked - PhosphorusPhosphorus · published March 24, 2022 · Tier A
  5. [5]Solid but Challenging: CISA's FOCAL Plan - PhosphorusPhosphorus · published September 23, 2024 · Tier A
  6. [6]Why is IoT Security Important? - PhosphorusPhosphorus · published February 3, 2021 · Tier A
  7. [7]Service-Based Cybercrime Seeks Persistence in IoT - PhosphorusPhosphorus · published December 2, 2022 · Tier A
  8. [8]Putting OpenSSL in Context for xIoT Device Security - PhosphorusPhosphorus · published November 4, 2022 · Tier A
  9. [9]Uncovering the Hidden Security Threat of IoT with Jay Leek - PhosphorusPhosphorus · published April 4, 2023 · Tier A

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