ForeScout Technologies, Inc.
AcquiredPlano, US Β· Founded 2000 Β· Delaware corporation Β· 1,321 employees on LinkedIn Β· 9 known investors
Forescout provides cyber-physical systems security and network access control solutions for IoT, OT, and medical device environments. The company serves enterprises managing IoT and industrial control system security risks.
Also known as Forescout Β· ForeScout Technologies Inc. Β· FSCT
Founders & leadership
ForeScout Technologies, Inc. was founded in 2000 by Yehezkel Yeshurun.
Investors Β· 9
Reported raises Β· per SEC filings
Form D private placements$75.4M disclosed across 1 of 2 rounds Β· 2015β2020
βΆ$75.4MraisedDec 2015 Β· 13 investors Β· Other TechnologyRule 506(b)
- Rami KalishDirector
- Enrique SalemDirector
- David DeWaltDirector
- Darren MillikenExecutive Officer
- Theresia GouwDirector
- Mark JensenDirector
- Michael DeCesareExecutive Officer, Director
- T. Kent ElliottDirector
- Christopher HarmsExecutive Officer
- Yehezkel YeshurunDirector
- Richard AntonDirector
- Offering amount
- $135M
- Amount sold
- $75.4M
- Sales commissions
- $1.3M
- Placement agents
- Morgan Stanley & Co. LLC
- First sale
- Nov 2015
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Company profile
researched Aug 2026Forescout Technologies, Inc. is a cybersecurity company whose platform identifies, classifies, assesses and controls managed and unmanaged connected assets across IT, OT, IoT and IoMT environments. Historically described as a provider of device visibility and control, the company delivers real-time identification and continuous control of devices spanning campus IT, campus IoT, operational technology, the data center and third-party cloud, and has offered products including eyeSight, eyeSegment, eyeControl, eyeExtend, eyeManage, eyeInspect and SilentDefense.
The current commercial offering is the Forescout Vistaro platform (renamed from the Forescout 4D Platform in June 2025), which combines Universal Zero Trust Network Access, OT/cyber-physical systems security and continuous exposure management, delivered agentless and vendor-agnostic. Platform components marketed by the company include asset inventory, network segmentation, network access control, security automation across more than 180 integrated tools, secure remote access, post-quantum-cryptography risk discovery, IoT security, OT security, medical device security and automated compliance. VistaroAI is positioned as an agentic AI suite spanning discovery, analysis and response with human-in-the-loop control. Solution bundles are sold under names such as Cyber Exposure, Security Core, Security Automation and Cyber Assurance.
Forescout Research β Vedere Labs (earlier Forescout Research Labs) conducts proprietary threat and vulnerability research across IT, OT, IoT and IoMT, publishing findings such as vulnerabilities in widely used TCP/IP stacks (2020), 15 vulnerabilities in the TP-Link Omada zero-touch provisioning ecosystem (2025) and a 2026H1 threat review covering 4,544 ransomware attacks.
Business model
Forescout sells an enterprise cybersecurity platform to large organizations and government agencies, packaged into solution bundles with optional add-on modules and cloud management. The company reported roughly 70% recurring revenue for fiscal 2020 and, as a public company, reported license, subscription and professional services revenue lines, with management stating an intent to introduce more recurring revenue elements to the financial model.
Mixed license, subscription and professional services revenue. In Q1 2019 total revenue of $75.6 million comprised license revenue of $37.7 million, subscription revenue of $33.8 million and professional services revenue of $4.1 million. By FY2020 the company reported approximately 70% recurring revenue and double-digit year-over-year ARR growth.
Traction
Q1 2019 total revenue was $75.6 million, up 27% year-over-year, with GAAP gross margin of 75% and a GAAP net loss of $34.3 million; the company guided to full-year 2019 revenue of $365.3β375.3 million. In fiscal 2020 Forescout added over 300 new customer logos and closed with double-digit ARR growth and about 70% recurring revenue. In 2024 its US federal business grew at a record double-digit rate, with Department of Defense revenue up 38% year-over-year and more than 20 new Defense and Civilian customers added.
Latest developments
Recent announcements include the rename of the Forescout 4D Platform to Forescout Vistaro with AI-driven security features and the introduction of Forescout VistaroAI (2025-2026), launch of post-quantum cryptography readiness and encryption hygiene dashboards, patented detection of non-quantum-safe encryption, the Eyesentry cloud-native exposure management solution, partnerships with Netskope, Xage Security, Crytica Security and the Electricity Information Sharing and Analysis Center, inclusion in the NATO Information Assurance Product Catalogue, disclosure of 15 vulnerabilities in TP-Link's Omada zero-touch provisioning ecosystem, and publication of a 2026H1 threat review.
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
Positioned as a global cybersecurity leader in device visibility and control and, later, cyber-physical systems and Enterprise of Things security, with more than 20 years of history. Company materials claim adoption by 3 of the top 5 Global 500 manufacturers, 8 of the top 10 Fortune 500 utilities, 7 of the top 10 Global 500 banks and 85% of US federal executive departments; earlier materials cited more than 2,500 customers in over 60 countries. Third-party recognition includes a 2019 Frost & Sullivan Global Enabling Technology Leadership Award for smart building IT-OT cybersecurity, NIAP Common Criteria certification for its OT solution, and inclusion in the NATO Information Assurance Product Catalogue.
Company and investor statements emphasize proprietary agentless technology that works without software agents or prior device knowledge, vendor and device agnosticism, coverage of unmanaged as well as managed assets, converged IT/OT/IoT/IoMT scope, and a broad integration ecosystem. Forescout also cites Common Criteria certification for both IT and OT products and its in-house Vedere Labs threat research as differentiators.
Technology
Agentless, vendor-agnostic device visibility and control that requires no software agents or prior device knowledge, combined with pre- and post-connect network access control, network segmentation simulation and enforcement, OT/ICS anomaly and threat detection, and cloud-native management. More recent additions include patented technology to detect non-quantum-safe encryption across IT, OT and IoT, post-quantum cryptography readiness and encryption hygiene dashboards, automated security controls assessment, and agentic/generative AI and machine learning woven across the platform.
Go-to-market
Direct enterprise and federal sales complemented by a channel partner program (recognized with a 5-Star rating in CRN's 2019 Partner Program Guide) and an extensive technology integration ecosystem spanning more than 100 to 180 security and IT products. Partnerships and integrations announced include Splunk, CrowdStrike, CyberArk, Arista Networks, ServiceNow, FireEye, Netskope, Xage Security and Crytica Security. The company also uses self-guided and custom demos, workshops and events for lead generation, and dedicated regional leadership such as a Japan regional director appointed in 2025.
Large enterprises and government organizations, including Fortune 100/1000 and Global 2000 companies, US federal Defense and Civilian agencies, and operators in manufacturing, utilities, banking, electronics, automotive, healthcare, and aerospace and defense. The company also serves state and local government and education buyers.
Geography
Headquartered historically in San Jose, California, with internal records listing Plano, US. The company reported more than 2,500 customers in over 60 countries, EMEA go-to-market operations, and appointed a Regional Director for Japan in 2025.
History
Forescout describes over 20 years of operating history in cybersecurity. It was listed on NASDAQ under the ticker FSCT and reported quarterly results as a public company through 2019. In October 2019 activist investors Corvex Management and Jericho Capital Asset Management disclosed a combined 14.5% stake via 13-D filings; in February 2020 Forescout agreed to be acquired by Advent International, with Crosspoint Capital Partners as co-investor and advisor, for $33.00 per share in cash valuing the company at $1.9 billion. The take-private completed in August 2020, after which the company continued under CEO Michael DeCesare before Barry Mainz was identified as CEO by 2025. Product-line milestones include integration of SecurityMatters technology into the core platform in 2019, launch of the Forescout 4D Platform in March 2024, and its rename to the Forescout Vistaro Platform in June 2025.
Risks & controversies
As a public company Forescout recorded sustained operating losses (GAAP operating loss of $34.1 million in Q1 2019 on $75.6 million of revenue). Its board cited volatility associated with the transition to ratable revenue recognition, changes to go-to-market initiatives particularly in EMEA, and the timing of large eight-figure deals while managing to quarterly street estimates as reasons the take-private was the best path forward. The 2019 accumulation of a 14.5% combined stake by Corvex and Jericho Capital preceded the sale process.
Compiled by commissioned research from 8 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Competitors Β· 8
by search overlap
Companies competing with ForeScout Technologies, Inc. for the same Google search keywords, organic and paid, via search-intersection analysis.
Acquisitions Β· 1
Early investors' stakes continue via these dealsAutomated threat detection and response with SOC-as-a-service (acquired by Forescout)
Timeline Β· 27
launches, deals, and filingsRename accompanied by highlighted AI-driven security features; the company also launched post-quantum cryptography readiness and encryption hygiene dashboards the same day.
Collaboration to bring threat intelligence and research to North American utilities.
Portable cybersecurity solution optimized for assessments of air-gapped and low-bandwidth systems.
eyeInspect v5.2 was certified compliant with the Common Criteria Collaborative Protection Profile for Network Devices v2.2e (ISO/IEC 15408), recognized by 26 nations under the CCRA, building on an earlier IT Common Criteria certification.
Kevin O'Leary, previously VP of Broadcom's network security group, joined as Chief Product Officer. Brett Kelsey joined to lead Professional Services and Rob Amezcua to lead Americas Enterprise Sales, having previously held senior roles at Optiv and Broadcom respectively.
$5.9M source β
Forescout announced industrial IoT and OT partnerships and integrations with Splunk, CrowdStrike and CyberArk to strengthen cyber-physical risk posture.
Forescout was selected as a key component of the DoD's Comply to Connect program, driving adoption across the Department of Defense.
A February 2021 company update states Advent International and Crosspoint Capital Partners took Forescout private six months earlier, in August 2020.
Forescout (NASDAQ: FSCT) entered a definitive agreement for Advent International, joined by co-investor and advisor Crosspoint Capital Partners, to acquire all outstanding shares for $33.00 per share in cash, valuing the company at $1.9 billion and taking it private. The deal included a 30-day go-shop period expiring March 8, 2020. Morgan Stanley advised Forescout with Wilson Sonsini Goodrich & Rosati as legal counsel; Ropes & Gray advised Advent.
$1.9B source β
13-D filings released October 21, 2019 disclosed the two funds had formed a partnership to approach Forescout and accumulated a combined 14.5% ownership.
Integrated SecurityMatters technology into the core Forescout platform, adding multi-cloud visibility, auto-classification for medical and industrial devices, and automated network segmentation across firewalls, cloud and SDN environments.
Partnership combining advanced threat detection with agentless device visibility for faster threat response.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
Legal entities Β· 1
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primary sources listed
- ForeScout Technologies, Inc.forescout.com Β· web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does ForeScout Technologies, Inc. do?
- Cybersecurity vendor providing agentless asset visibility, network access control and OT/IoT security; taken private in 2020.
- Who founded ForeScout Technologies, Inc.?
- ForeScout Technologies, Inc. was founded by Yehezkel Yeshurun in 2000.
- Who are ForeScout Technologies, Inc.'s investors?
- ForeScout Technologies, Inc.'s investors include Accel, Acrew Capital, Aspect Ventures, Cross Creek Advisors, Founders Circle Capital, Owl Capital, Toba Capital, Vintage Investment Partners and 1 more.
- How much funding has ForeScout Technologies, Inc. raised?
- ForeScout Technologies, Inc. has disclosed $75.4M raised across 1 of its 2 known rounds.
- Where is ForeScout Technologies, Inc. headquartered?
- ForeScout Technologies, Inc. is headquartered in Plano, US.