# Best OT Security Tools Software

## How Many OT Security Tools Software Products Does G2 Track?

**Total Products under this Category:** 36

### Category Stats (Jul 2026)

- **Average Rating:** 4.51/5 (↑0.01 vs Jun 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** Forescout Platform (+0.74%) - Among all products in this category, Forescout Platform recorded the largest rating increase compared to last month

_Last updated: July 27, 2026_

## How Does G2 Rank OT Security Tools Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 200+ Authentic Reviews
- 36+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

### [Palo Alto Networks IoT/OT Security](https://www.g2.com/products/palo-alto-networks-iot-ot-security/reviews)

What is Palo Alto Networks IoT/OT Security? Palo Alto Networks IoT/OT Security is a comprehensive solution delivering ML-powered visibility, prevention, and zero-trust enforcement in a single platform for all your connected devices. Our portfolio offers a range of IoT and OT security solutions tailored to meet the specific needs of our customer in different verticals: Enterprise IoT Security A Zero Trust security solution for IoT devices that uses a three-tier ML model, App-ID technology, and crowdsourced telemetry. It can discover devices, assess devices, protect devices, and simplify operations. Industrial OT Security A security solution for OT devices and networks that uses machine learning (ML), App-ID, and Device-ID technology. It offers visibility, segmentation, access control, risk monitoring, and continuous security inspection. Medical IoT Security A Zero Trust security solution for connected medical devices that helps healthcare providers protect their network from threats. The security solution uses machine learning (ML) to generate device profiles from five key behaviors: internal connections, internet connections, protocols, applications, and payloads. It also integrates with security orchestration, automation, and response (SOAR) systems for playbook-based incident response.

**Average Rating:** 4.4/5.0

**Total Reviews:** 118

#### Who Is the Company Behind Palo Alto Networks IoT/OT Security?

- **Seller:** [Palo Alto Networks](https://www.g2.com/sellers/palo-alto-networks)
- **Year Founded:** 2005
- **HQ Location:** Santa Clara, CA
- **Twitter:** @PaloAltoNtwks  
128,951 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=283fa006a7b7db5565e608e4d1bc1dafae45bdf4b312f2cd5bb208ac9271f81d&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F30086%2F&secure%5Burl_type%5D=linkedin_company_website)  
22,313 employees on LinkedIn®
- **Ownership:** NYSE: PANW

#### Who Uses This Product?

- **Who Uses This:** Network Security Engineer
- **Top Industries:** Information Technology and Services, Computer & Network Security
- **Company Size:** 35% Medium, 34% Small

#### What Do G2 Reviewers Say About Palo Alto Networks IoT/OT Security?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **AI-powered threat detection** of Palo Alto Networks IoT/OT Security, providing real-time anomaly identification and peace of mind.
- Users value the **strong protection** provided by Palo Alto Networks IoT/OT Security for connected devices and networks.
- Users commend the **ease of use** of Palo Alto Networks IoT/OT Security, making it accessible for all skill levels.
- Users value the **seamless integration** and effective monitoring capabilities of Palo Alto Networks IoT/OT Security in their environments.
- Users appreciate the **full visibility and continuous monitoring** of Palo Alto Networks IoT/OT Security for enhanced protection.

##### Cons

- Users find Palo Alto Networks IoT/OT Security **expensive** , making it less accessible for smaller organizations with limited budgets.
- Users find the **difficult learning curve** of Palo Alto Networks IoT/OT Security challenging, particularly for first-time setups.
- Users find the **complex setup** of Palo Alto Networks IoT/OT Security challenging, particularly for first-time implementers.
- Users find the **difficult configuration** of Palo Alto Networks IoT/OT Security challenging, particularly without strong cybersecurity skills.
- Users note the **required expertise** for managing Palo Alto Networks IoT/OT Security can hinder effective deployment and accessibility.

#### What Are Recent G2 Reviews of Palo Alto Networks IoT/OT Security?

**["Great Tool for Managing and Securing Every Device on the Network"](https://www.g2.com/survey_responses/palo-alto-networks-iot-ot-security-review-11915009)**

**Rating:** 5.0/5.0 stars

_— Ritika G._

[Read full review](https://www.g2.com/survey_responses/palo-alto-networks-iot-ot-security-review-11915009)

**["Easy Device Visibility and Better Security Management"](https://www.g2.com/survey_responses/palo-alto-networks-iot-ot-security-review-12993496)**

**Rating:** 5.0/5.0 stars

_— Dev S._

[Read full review](https://www.g2.com/survey_responses/palo-alto-networks-iot-ot-security-review-12993496)

### [Armis](https://www.g2.com/products/armis/reviews)

Armis is THE cyber exposure management and security solution designed to help organizations protect their entire attack surface and manage cyber risk exposure in real time. In an era where traditional perimeter defenses are becoming increasingly ineffective, Armis provides a comprehensive approach to cybersecurity that enables organizations to continuously monitor, secure, and manage all critical assets, whether on-premises or in the cloud. Armis' target audience includes a wide range of organizations, from Fortune 100, 200, and 500 companies to national governments and local entities. These organizations face unique challenges in safeguarding their critical infrastructure and sensitive data against evolving cyber threats. Armis is particularly beneficial for industries that rely heavily on connected devices and IoT (Internet of Things) technologies, as it offers visibility and protection across diverse environments. This capability is essential for organizations aiming to maintain operational continuity and protect their reputations in a landscape where cyber incidents can have far-reaching consequences. Key features of Armis include real-time visibility into all connected devices, automated risk assessment, and continuous monitoring of network activity. The platform uses advanced machine learning algorithms to detect anomalies and potential threats, allowing organizations to respond swiftly to emerging risks. Additionally, Armis seamlessly integrates with existing security tools, enhancing security posture without disrupting current workflows. This interoperability is crucial for organizations looking to strengthen their defenses without overhauling their entire security infrastructure. The benefits of using Armis extend beyond mere compliance; they encompass a proactive approach to cybersecurity that empowers organizations to anticipate and mitigate risks before they escalate into significant incidents. By providing a unified view of the attack surface, Armis enables security teams to prioritize their efforts and allocate resources effectively. This strategic focus not only enhances security measures, but also fosters a culture of cybersecurity awareness throughout the organization, ultimately contributing to a more resilient operational framework. In summary, Armis stands out in the cybersecurity landscape by offering a holistic solution that addresses the complexities of modern threats. Its ability to provide real-time insights and automate risk management processes makes it an invaluable tool for organizations striving to protect their critical assets and maintain a secure environment in an increasingly interconnected world.

**Average Rating:** 4.4/5.0

**Total Reviews:** 13

#### Who Is the Company Behind Armis?

- **Seller:** [Armis Security](https://www.g2.com/sellers/armis-security)
- **Company Website:** www.armis.com
- **Year Founded:** 2015
- **HQ Location:** San Francisco, US
- **Twitter:** @ArmisSecurity  
2,862 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=8c5aeffc65a0aee5416fd22e5ac1157c62f1297074ea73a2e5f82b83827937c3&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F17905260&secure%5Burl_type%5D=linkedin_company_website)  
989 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 46% Large, 31% Small

#### What Do G2 Reviewers Say About Armis?

_AI-generated summary from verified user reviews_

##### Pros

- Users love the **intuitive interface** of Armis, allowing easy access to insights and efficient management of tasks.
- Users value Armis for its **effective asset management** , providing insights into vulnerabilities and enhancing security oversight.
- Users admire the **intuitive interface** of Armis, facilitating easy access to insights and effective risk management.
- Users value Armis for its **deep visibility** into their environments, enhancing understanding of network traffic and security.
- Users commend the **responsive customer support** of Armis, enhancing their overall experience and problem resolution.

##### Cons

- Users face **integration issues** with Armis, complicating device management and leading to unreliable information initially.
- Users find the **additional costs for add-on modules** to be quite high, impacting overall value and accessibility.
- Users find the **complex setup** requires effort, making initial configuration and cost a challenge with Armis.
- Users find the **difficult setup** challenging, as integrations can be clunky before functioning effectively.
- Users experience **excessive notifications** from Armis, leading to a noisy environment needing integrations for meaningful data.

#### What Are Recent G2 Reviews of Armis?

**["Awesome Service"](https://www.g2.com/survey_responses/armis-review-11663674)**

**Rating:** 5.0/5.0 stars

_— Verified User in Computer & Network Security_

[Read full review](https://www.g2.com/survey_responses/armis-review-11663674)

**["CTO"](https://www.g2.com/survey_responses/armis-review-11877734)**

**Rating:** 4.5/5.0 stars

_— David F._

[Read full review](https://www.g2.com/survey_responses/armis-review-11877734)

#### What Are G2 Users Discussing About Armis?

- [What is Armis used for?](https://www.g2.com/discussions/what-is-armis-used-for)

### [Cisco Cyber Vision](https://www.g2.com/products/cisco-cyber-vision/reviews)

Sentryo is the pioneer in solutions dedicated to managing the cyber risk of M2M networks and Industrial Control Systems (ICS).

**Average Rating:** 4.4/5.0

**Total Reviews:** 4

#### Who Is the Company Behind Cisco Cyber Vision?

- **Seller:** [Cisco](https://www.g2.com/sellers/cisco)
- **Year Founded:** 1984
- **HQ Location:** San Jose, CA
- **Twitter:** @Cisco  
720,366 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=476aeabc5a712d049453edd5c54ea0318890d9e60d93782e37fe028224df1cbd&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcisco%2F&secure%5Burl_type%5D=linkedin_company_website)  
95,545 employees on LinkedIn®
- **Ownership:** NASDAQ:CSCO

#### Who Uses This Product?

- **Company Size:** 50% Medium, 25% Large

#### What Are Recent G2 Reviews of Cisco Cyber Vision?

**["“Balancing Strengths and Challenges: A Review of Cisco Cyber Vision for OT Security”"](https://www.g2.com/survey_responses/cisco-cyber-vision-review-10455969)**

**Rating:** 5.0/5.0 stars

_— Amit P._

[Read full review](https://www.g2.com/survey_responses/cisco-cyber-vision-review-10455969)

**["The Inclussive Security Platform that Supports Cyber Postures and OT"](https://www.g2.com/survey_responses/cisco-cyber-vision-review-10377761)**

**Rating:** 4.5/5.0 stars

_— Diago L._

[Read full review](https://www.g2.com/survey_responses/cisco-cyber-vision-review-10377761)

### [Tenable OT Security](https://www.g2.com/products/tenable-ot-security/reviews)

Tenable OT Security disrupts attack paths and protects industrial and critical infrastructure from cyber threats. From inventory management and asset tracking to threat detection at the device and network level, vulnerability management and configuration control, Tenable’s OT security capabilities provide maximum visibility, security, and control across your entire operations.

**Average Rating:** 4.8/5.0

**Total Reviews:** 4

#### Who Is the Company Behind Tenable OT Security?

- **Seller:** [Tenable](https://www.g2.com/sellers/tenable)
- **Company Website:** www.tenable.com
- **HQ Location:** Columbia, MD
- **Twitter:** @TenableSecurity  
87,752 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=029266d223c06e6b09e6d209209f15aad3bbad59d05069b38d5ec2757e74adef&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F25452%2F&secure%5Burl_type%5D=linkedin_company_website)  
2,350 employees on LinkedIn®
- **Ownership:** NASDAQ: TENB

#### Who Uses This Product?

- **Company Size:** 75% Large, 25% Small

#### What Do G2 Reviewers Say About Tenable OT Security?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **comprehensive visibility** provided by Tenable OT Security, enhancing understanding of complex OT environments.
- Users value the **enhanced OT awareness and visibility** of Tenable OT Security, effectively supporting security teams without disrupting operations.
- Users value the **full visibility into OT assets** provided by Tenable OT Security, enhancing security awareness without disrupting operations.
- Users value the **full visibility into OT assets** provided by Tenable OT Security, enabling quick risk remediation without production impact.
- Users value the **detection efficiency** of Tenable OT Security, enabling quick risk remediation without disrupting operations.

##### Cons

- Users find the **limited features** of Tenable OT Security restricts customization and complicates asset management tasks.
- Users find the **complexity of advanced reporting and asset management** to be a tedious aspect of Tenable OT Security.
- Users find the **pricing high** for smaller plants, complicating budget considerations and creating concerns over value.
- Users find the **asset management process complicated** and the discovery of OT assets tedious and challenging.
- Users find the **inadequate reporting** and complex pricing of Tenable OT Security frustrating and limiting for their needs.

#### What Are Recent G2 Reviews of Tenable OT Security?

**["Unmatched OT Visibility and Fast, Accurate Alerts"](https://www.g2.com/survey_responses/tenable-ot-security-review-11972699)**

**Rating:** 5.0/5.0 stars

_— Verified User in Accounting_

[Read full review](https://www.g2.com/survey_responses/tenable-ot-security-review-11972699)

**["A Strong Solution for IT–OT Converged Security"](https://www.g2.com/survey_responses/tenable-ot-security-review-12169148)**

**Rating:** 4.5/5.0 stars

_— Verified User in Facilities Services_

[Read full review](https://www.g2.com/survey_responses/tenable-ot-security-review-12169148)

### [Claroty](https://www.g2.com/products/claroty/reviews)

Claroty has redefined cyber-physical systems (CPS) protection with an unrivaled industry-centric platform built to secure mission-critical infrastructure. The Claroty Platform provides the deepest asset visibility and the broadest, built-for-CPS solution set in the market comprising exposure management, network protection, secure access, and threat detection — whether in the cloud with Claroty xDome or on-premise with Claroty Continuous Threat Detection (CTD). Backed by award-winning threat research and a breadth of technology alliances, The Claroty Platform enables organizations to effectively reduce CPS risk, with the fastest time-to-value and lower total cost of ownership. Claroty is deployed to hundreds of organizations at thousands of sites globally. The company is headquartered in New York City and has a presence in Europe, Asia-Pacific, and Latin America. To learn more visit claroty.com.

**Average Rating:** 4.7/5.0

**Total Reviews:** 6

#### Who Is the Company Behind Claroty?

- **Seller:** [Claroty](https://www.g2.com/sellers/claroty)
- **Year Founded:** 2015
- **HQ Location:** New York, New York, United States
- **Twitter:** @Claroty  
4,247 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b90f36053c8fc8d920f5f90406c0dfc0699b0556b8fcc1a87a25ff11671c6be7&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fclaroty%2F&secure%5Burl_type%5D=linkedin_company_website)  
815 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 67% Large, 33% Medium

#### What Do G2 Reviewers Say About Claroty?

_AI-generated summary from verified user reviews_

##### Pros

- Users commend Claroty for its **excellent asset discovery** , providing insights into data flows and potential breaches.
- Users value the **diverse features** of Claroty that effectively meet their security needs across IT infrastructure.
- Users value the **integration with third-party vendors** , enhancing the overall functionality and flexibility of Claroty.
- Users value the **robust security features** of Claroty that effectively protect and enhance their IT infrastructure.
- Users value the **simplicity** of Claroty, appreciating its ease of use and prompt updates.

##### Cons

- Users note that substantial **fine-tuning is required** for deploying Claroty, complicating the learning process.
- Users often find that **technical issues** with bugs and fine-tuning hinder efficient deployment and incident management of Claroty.
- Users find the **initial setup challenging** due to an overwhelming array of features in Claroty.

#### What Are Recent G2 Reviews of Claroty?

**["Simple and yet very Efficient"](https://www.g2.com/survey_responses/claroty-review-10469219)**

**Rating:** 5.0/5.0 stars

_— Mohit K._

[Read full review](https://www.g2.com/survey_responses/claroty-review-10469219)

**["Perfect Solution!"](https://www.g2.com/survey_responses/claroty-review-9944676)**

**Rating:** 5.0/5.0 stars

_— Wellington S._

[Read full review](https://www.g2.com/survey_responses/claroty-review-9944676)

### [Darktrace / OT](https://www.g2.com/products/darktrace-ot/reviews)

Darktrace / OT is a purpose-built security solution for critical infrastructure, designed to protect OT environments and converged IT, IoT and OT networks against known, unknown, and novel threats. As attackers increasingly exploit IT/OT convergence through techniques like living-off-the-land, insider activity, and supply-chain compromise, Darktrace / OT learns normal behavior across industrial, enterprise, and connected assets to autonomously identify risk and vulnerability, detect anomalies, investigate, and respond to threats before they disrupt operations. Unify Insights Across OT and IT Delivers unified visibility across OT, IT, IoT, IIoT, and IoMT environments, enabling organizations to understand assets, communications, and exposure across industrial networks. Using passive monitoring, safe active identification, and deep packet inspection for OT-specific protocols, the platform maps device relationships and risk across the Purdue Model, with tailored views for security, governance, and OT engineering teams. Automate OT Alert Investigations Darktrace / OT detects anomalous activity in real time by identifying deviations from normal behavior across converged environments. Cyber AI Analyst automatically investigates OT alerts, producing plain-English reports that explain what happened, how activity progressed, and why it matters, reducing investigation time by up to 90% and streamlining OT analyst workflows without relying on static rules or signatures. Prioritize Your Biggest OT Risks Enables risk management beyond CVEs by modeling how attackers could realistically move through industrial environments. By correlating asset criticality, segmentation posture, firewall configuration, reachability, MITRE techniques, KEV data, and business impact, the platform helps teams prioritize mitigations that reduce real-world operational risk, even when patching is not immediately possible.

**Average Rating:** 4.3/5.0

**Total Reviews:** 4

#### Who Is the Company Behind Darktrace / OT?

- **Seller:** [Darktrace](https://www.g2.com/sellers/darktrace)
- **Year Founded:** 2013
- **HQ Location:** Cambridgeshire, England
- **Twitter:** @Darktrace  
18,177 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=135b6c23b3a9e309b159fca717d84aafed8cc711e65da3de0cae9184091cd6d3&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F5013440%2F&secure%5Burl_type%5D=linkedin_company_website)  
2,607 employees on LinkedIn®
- **Ownership:** LON: DARK

#### Who Uses This Product?

- **Company Size:** 75% Medium, 25% Large

#### What Are Recent G2 Reviews of Darktrace / OT?

**["Darktrace Network: Intuitive, AI-Driven Cybersecurity with Real-Time Threat Detection"](https://www.g2.com/survey_responses/darktrace-ot-review-12746380)**

**Rating:** 5.0/5.0 stars

_— Daniel S._

[Read full review](https://www.g2.com/survey_responses/darktrace-ot-review-12746380)

**["Great product, protects manufacturing environments"](https://www.g2.com/survey_responses/darktrace-ot-review-11496421)**

**Rating:** 5.0/5.0 stars

_— Verified User in Manufacturing_

[Read full review](https://www.g2.com/survey_responses/darktrace-ot-review-11496421)

### [Forescout Platform](https://www.g2.com/products/forescout-platform/reviews)

As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and isolate compromised systems, block lateral movement, and automate response across IT, OT, IoT, and IoMT environments. The Forescout Vistaro™ platform, powered by agentic AI and enhanced with Vedere Labs threat intelligence, delivers a Universal Zero Trust Network Access (UZTNA) architecture that integrates seamlessly with 180+ security and IT products. With Forescout Vistaro, organizations get comprehensive inventory and classification of both managed and unmanaged assets, continuous exposure management, and real-time protection including dynamic network segmentation and automated threat response.

**Average Rating:** 4.5/5.0

**Total Reviews:** 16

#### Who Is the Company Behind Forescout Platform?

- **Seller:** [Forescout Technologies](https://www.g2.com/sellers/forescout-technologies)
- **Year Founded:** 2000
- **HQ Location:** San Jose, CA
- **Twitter:** @ForeScout  
23,057 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6f1e942ab80d0bedc6197ed48bdc23b36c4e3541aeed93812a834e58f906c458&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fforescout-technologies&secure%5Burl_type%5D=linkedin_company_website)  
1,328 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Computer & Network Security
- **Company Size:** 53% Large, 29% Medium

#### What Do G2 Reviewers Say About Forescout Platform?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **comprehensive security features** of Forescout Platform, effectively protecting sensitive information and resources.
- Users value the **instant discovery and classification** of endpoints, enhancing network security and resource access.
- Users appreciate the **instant discovery and classification** of IP-based endpoints, enhancing network visibility and security management.
- Users value the **instant discovery and comprehensive visibility** provided by Forescout, enhancing endpoint management across diverse environments.
- Users benefit from the **customization options** in Forescout, enhancing flexibility and control over network security policies.

##### Cons

- Users find the **implementation complex** , facing challenges with integration and inadequate support during the process.
- Users face significant **dependency issues** with Forescout Platform, affecting implementation and integration processes across the system.
- Users face significant **integration issues** with Forescout Platform, complicating implementation and increasing dependency on various systems.
- Users experience significant **performance issues** with Forescout Platform, including slow TAC support and complex implementation processes.
- Users are frustrated by the **poor customer support** from TAC, leading to slow problem resolution and dissatisfaction.

#### What Are Recent G2 Reviews of Forescout Platform?

**["Complete Device Visibility with Powerful Automation and Integrations"](https://www.g2.com/survey_responses/forescout-platform-review-10795997)**

**Rating:** 4.5/5.0 stars

_— Sumit B._

[Read full review](https://www.g2.com/survey_responses/forescout-platform-review-10795997)

**["Flexible Platform That Simplifies Monitoring and Integration with your actual tools"](https://www.g2.com/survey_responses/forescout-platform-review-12806544)**

**Rating:** 5.0/5.0 stars

_— Verified User in Information Technology and Services_

[Read full review](https://www.g2.com/survey_responses/forescout-platform-review-12806544)

#### What Are G2 Users Discussing About Forescout Platform?

- [What is Forescout Platform used for?](https://www.g2.com/discussions/what-is-forescout-platform-used-for)

### [Microsoft Defender for IoT](https://www.g2.com/products/microsoft-defender-for-iot/reviews)

Microsoft Defender for IoT is a comprehensive security solution designed to protect Internet of Things (IoT and operational technology (OT environments. It offers real-time asset discovery, vulnerability management, and cyberthreat protection for industrial infrastructures, including industrial control systems (ICS and OT networks. By providing complete visibility into all IoT and OT assets, Defender for IoT enables organizations to manage security posture effectively and reduce the cyberattack surface area. Its agentless, network-layer monitoring ensures seamless integration with existing systems without impacting performance. Key Features and Functionality: - Context-Aware Visibility: Gain comprehensive insights into all IoT and OT assets, including device details, communication protocols, and behaviors. - Risk-Based Security Posture Management: Identify and prioritize vulnerabilities using a risk-prioritized approach to minimize the cyberattack surface. - Cyberthreat Detection with Behavioral Analytics: Utilize IoT and OT-aware behavioral analytics and machine learning to detect and respond to cyberthreats effectively. - Agentless Monitoring: Deploy non-invasive, passive monitoring that integrates seamlessly with diverse industrial equipment and legacy systems. - Unified Security Operations: Integrate with Microsoft Sentinel and other security information and event management (SIEM systems for centralized monitoring and governance. Primary Value and Problem Solved: Defender for IoT addresses the critical need for robust security in IoT and OT environments, which are often vulnerable due to unpatched devices, misconfigurations, and lack of visibility. By providing real-time asset discovery, continuous monitoring, and advanced threat detection, it empowers organizations to proactively manage risks, ensure compliance, and protect critical infrastructure from evolving cyberthreats. This solution enables seamless integration with existing security operations, fostering a unified approach to IT and OT security.

**Average Rating:** 4.3/5.0

**Total Reviews:** 97

#### Who Is the Company Behind Microsoft Defender for IoT?

- **Seller:** [Microsoft](https://www.g2.com/sellers/microsoft)
- **Year Founded:** 1975
- **HQ Location:** Redmond, Washington
- **Twitter:** @microsoft  
13,091,739 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=9458f51bd6ded48ad432a804f19ad736469f007787569b63827154231c315630&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fmicrosoft%2F&secure%5Burl_type%5D=linkedin_company_website)  
231,632 employees on LinkedIn®
- **Ownership:** MSFT

#### Who Uses This Product?

- **Top Industries:** Information Technology and Services, Computer Software
- **Company Size:** 42% Small, 30% Medium

#### What Do G2 Reviewers Say About Microsoft Defender for IoT?

_AI-generated summary from verified user reviews_

##### Pros

- Users praise the **ease of use** of Microsoft Defender for IoT, enhancing threat detection and implementation.
- Users value the **easy integrations** of Microsoft Defender for IoT, enhancing security and workflow optimization effortlessly.
- Users appreciate the **reliable threat monitoring** of Microsoft Defender for IoT, ensuring robust protection without system slowdowns.
- Users value the **real-time monitoring and alerting capabilities** of Microsoft Defender for IoT for enhanced security.
- Users value the **effective management of cybersecurity** in IoT, enhancing protection and response for their devices.

##### Cons

- Users find Microsoft Defender for IoT to be **very expensive** , making it challenging for small businesses to manage costs.
- Users find the **learning curve** steep, making initial setup challenging for those unfamiliar with Microsoft's ecosystem.
- Users face **integration issues** with Microsoft Defender for IoT, citing limited interoperability and challenges for new users.
- Users find **installation challenges** with Microsoft Defender for IoT, requiring a learning curve and facing compatibility issues.
- Users note the **missing features** in Microsoft Defender for IoT, as it is still in development with a learning curve.

#### What Are Recent G2 Reviews of Microsoft Defender for IoT?

**["Unparalleled visibility and threat protection for unmanaged OT/IoT environments."](https://www.g2.com/survey_responses/microsoft-defender-for-iot-review-12295807)**

**Rating:** 5.0/5.0 stars

_— Paul B._

[Read full review](https://www.g2.com/survey_responses/microsoft-defender-for-iot-review-12295807)

**["Key pointsEssential Security for Critical IoT and OT Infrastructure"](https://www.g2.com/survey_responses/microsoft-defender-for-iot-review-8104156)**

**Rating:** 5.0/5.0 stars

_— Dr. Shalini P._

[Read full review](https://www.g2.com/survey_responses/microsoft-defender-for-iot-review-8104156)

#### What Are G2 Users Discussing About Microsoft Defender for IoT?

- [What is Microsoft Defender for IoT used for?](https://www.g2.com/discussions/what-is-microsoft-defender-for-iot-used-for)

### [Nozomi Networks Platform](https://www.g2.com/products/nozomi-networks-platform/reviews)

Nozomi Networks offers highly accurate, actionable intelligence and protection for integrated cybersecurity at scale. The detailed visibility and in-depth insight provided by Nozomi Networks lets users: • See all the OT, IoT, IT, edge and cloud assets on your networks • Pinpoint the cyber threats and vulnerabilities that matter most • Respond quickly to incidents with forensic analysis tools • Manage asset, security and network data in a single platform • Scale cyber and operational resilience across your entire infrastructure

**Average Rating:** 5.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind Nozomi Networks Platform?

- **Seller:** [Nozomi Networks](https://www.g2.com/sellers/nozomi-networks)
- **Year Founded:** 2013
- **HQ Location:** San Francisco, California, United States
- **Twitter:** @nozominetworks  
4,238 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5226e5108a484b8d31b538c85ee5d2c460e909ca0f9b37ab7aee5e6e97ff318d&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fnozomi-networks-sa%2F&secure%5Burl_type%5D=linkedin_company_website)  
365 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Large

#### What Do G2 Reviewers Say About Nozomi Networks Platform?

_AI-generated summary from verified user reviews_

##### Pros

- Users praise the **customization options** of Nozomi Networks Platform, enhancing their ability to monitor network traffic effectively.
- Users praise the **detection algorithms** for identifying OT network intrusions and displaying traffic patterns effectively.
- Users commend the **detection efficiency** of Nozomi Networks Platform, effectively identifying intrusions and malicious traffic.
- Users value the **effective detection algorithms** in Nozomi, enhancing security with clear visibility of traffic patterns.
- Users value the **effective threat detection** capabilities of Nozomi Networks, noting its superb user-friendly interface for traffic monitoring.

##### Cons

- Users find Nozomi Networks Platform to be **expensive** , though it aligns with cyber security budget constraints.

#### What Are Recent G2 Reviews of Nozomi Networks Platform?

**["Nozomi offers excellent OT IDS"](https://www.g2.com/survey_responses/nozomi-networks-platform-review-8632385)**

**Rating:** 5.0/5.0 stars

_— Verified User in Oil & Energy_

[Read full review](https://www.g2.com/survey_responses/nozomi-networks-platform-review-8632385)

### [AnzenOT Risk Management](https://www.g2.com/products/anzenot-risk-management/reviews)

AnzenOT is operational technology (OT) cybersecurity risk quantification software for industrial operators. It puts a defensible dollar figure on cyber risk to plant operations, using the FAIR methodology adapted for OT and ICS environments instead of the generic IT scoring that most tools fall back on. The platform was built to close a specific gap. Serious OT risk assessment has meant paying consultants six figures for a point-in-time report that is out of date the moment a process changes. Cheaper tools focus on asset discovery and network monitoring, which tell you what you have but not what a compromise would actually cost the business. AnzenOT sits between those two, giving manufacturing and critical infrastructure teams continuous, consequence-driven risk intelligence at a price that does not require a consulting budget. At the core is the scenario-analysis engine, which models risk by consequence: what happens to production, safety, and revenue if a given system is compromised, and how likely that is. Scenarios are grounded in a curated database of over 450 documented OT and ICS incidents and mapped to MITRE ATT&CK for ICS, so the numbers trace back to real attacker behavior rather than guesswork. The output serves two audiences at once: engineers who need to know which systems and consequences to prioritize, and leaders who need to justify spend and report risk in financial terms the board understands. AnzenOT maps risk and compliance together against frameworks including IEC 62443, NIS2, TSA pipeline directives, and CMMC, so assessment work and audit evidence come from the same place instead of separate spreadsheets. The initial focus is food and beverage manufacturing, with the platform applicable across process and discrete manufacturing, energy, water, and other critical infrastructure sectors. Teams use it to quantify cyber risk for a single facility or a portfolio of plants, to reassess continuously as the environment changes, and to replace manual OT risk assessments with a repeatable, evidence-based method. If you are responsible for OT security, plant reliability, or industrial risk and you need numbers you can defend to a CFO, a regulator, or an insurer, AnzenOT gives you those numbers and shows the work behind them.

#### Who Is the Company Behind AnzenOT Risk Management?

- **Seller:** [AnzenOT](https://www.g2.com/sellers/anzenot)
- **Year Founded:** 2024
- **HQ Location:** Washington DC, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=cb8954a6b7fc8d7ca6f14dcfff366609d38d5b2e58a37a86bcb6158ec4813148&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fanzenot&secure%5Burl_type%5D=linkedin_company_website)  
3 employees on LinkedIn®

### [Asset Guardian](https://www.g2.com/products/asset-guardian/reviews)

Our Asset Guardian software helps you manage and protect the integrity of your Operational Technology (OT) assets, software, and data. By centralising version control, backups, and change management, it strengthens security, improves visibility, and reduces operational and cyber risk while supporting compliance with industry standards and regulations.

#### Who Is the Company Behind Asset Guardian?

- **Seller:** [Asset Guardian](https://www.g2.com/sellers/asset-guardian)
- **Year Founded:** 2000
- **HQ Location:** United Kingdom, GB
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d55b38cda7ecc75f37e23e99ec7358fc230d7d24a94bf982671688b5c62468aa&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fasset-guardian-solutions-limited%2F&secure%5Burl_type%5D=linkedin_company_website)  
12 employees on LinkedIn®

### [Bastazo](https://www.g2.com/products/bastazo/reviews)

Bastazo builds a cybersecurity platform to manage software vulnerability risk for critical infrastructure, allowing companies to automate risk analysis and optimize their business.

#### Who Is the Company Behind Bastazo?

- **Seller:** [Bastazo](https://www.g2.com/sellers/bastazo)
- **Year Founded:** 2020
- **HQ Location:** Bentonville, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=399ba63be1b88b316bde122124b07752d4d3cdc7e238563ab021a3b41b09f707&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fbastazo-inc%2F&secure%5Burl_type%5D=linkedin_company_website)  
13 employees on LinkedIn®

### [Check Point Industrial Control Systems (ICS) Security](https://www.g2.com/products/check-point-industrial-control-systems-ics-security/reviews)

Enhancing the security of Industrial Control Systems (ICS) presents distinctive challenges for companies. Ensuring service uptime, preserving data integrity, complying with regulations, and safeguarding public safety necessitate proactive security measures to protect these mission-critical assets.

#### Who Is the Company Behind Check Point Industrial Control Systems (ICS) Security?

- **Seller:** [Check Point Software Technologies](https://www.g2.com/sellers/check-point-software-technologies)
- **Year Founded:** 1993
- **HQ Location:** Redwood City, CA
- **Twitter:** @CheckPointSW  
70,955 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d885813f6605ba84238ae4a21d169e0c9ade054cf0c99ff53e72483b54a8b521&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcheck-point-software-technologies%2F&secure%5Burl_type%5D=linkedin_company_website)  
8,554 employees on LinkedIn®
- **Ownership:** NASDAQ:CHKP

### [Cyber Governance, Risk, and Compliance](https://www.g2.com/products/cyber-governance-risk-and-compliance/reviews)

Honeywell Cyber Governance, Risk and Compliance is a security compliance solution designed specifically for OT operations in energy, oil & gas, manufacturing, utilities, chemicals, maritime, pharma, and other regulated industrial sectors. It incorporates OT specific frameworks (e.g., NIST 800-82, NIS2, IEC 62443-3-3, NERC CIP, OTCC) and aligns compliance scoring with operational assets. The platform uses AI/ML to convert unstructured policy documents, often tens of thousands of requirements, into structured, actionable compliance data. This enables automated mapping of 25 CIS Benchmarks to OT frameworks and reduces dependence on manual interpretation. Combined with automated evidence ingestion and audit ready traceability, organizations can achieve faster, more accurate assessments with far less manual work.

#### Who Is the Company Behind Cyber Governance, Risk, and Compliance?

- **Seller:** [Honeywell Technologies](https://www.g2.com/sellers/honeywell-technologies)
- **Year Founded:** 1906
- **HQ Location:** Charlotte, North Carolina
- **Twitter:** @HoneywellNow  
2,526 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=2439934c193c64f590ac3e59168d5255fa5931a7d9141987b03ad28a37fa5cfe&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fhoneywell%2F&secure%5Burl_type%5D=linkedin_company_website)  
132,085 employees on LinkedIn®
- **Ownership:** HON

### [Cyber Insights](https://www.g2.com/products/cyber-insights/reviews)

Cyber Insights is a network intrusion detection system (NIDS) designed specifically for OT and industrial environments. Providing automated asset discovery & inventory including asset lifecycle status, comprehensive network monitoring and threat detection, and vulnerability management capabilities.

**Average Rating:** 5.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind Cyber Insights?

- **Seller:** [Honeywell Technologies](https://www.g2.com/sellers/honeywell-technologies)
- **Year Founded:** 1906
- **HQ Location:** Charlotte, North Carolina
- **Twitter:** @HoneywellNow  
2,526 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=2439934c193c64f590ac3e59168d5255fa5931a7d9141987b03ad28a37fa5cfe&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fhoneywell%2F&secure%5Burl_type%5D=linkedin_company_website)  
132,085 employees on LinkedIn®
- **Ownership:** HON

#### Who Uses This Product?

- **Company Size:** 100% Medium

#### What Are Recent G2 Reviews of Cyber Insights?

**["Increased compliance with the sector standards"](https://www.g2.com/survey_responses/cyber-insights-review-10574655)**

**Rating:** 5.0/5.0 stars

_— Angela A._

[Read full review](https://www.g2.com/survey_responses/cyber-insights-review-10574655)

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[Browse OT Security Tools Themes](/categories/ot-security-tools/themes)

 ![Lauren Worth](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Lauren Worth")
LW

Researched and written by [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)

Updated May 7, 2025

Operational technology (OT) security tools are solutions designed specifically for OT environments. OT security vendors develop OT security software to address the unique challenges of OT environments and to secure the tools used in manufacturing, utilities, and other industrial environments.

Unlike most traditional IT security solutions, OT security solutions typically use a combination of software and hardware, distinguishing them from other types of security products. OT security tools protect OT environments through access controls, asset and inventory management, network monitoring, intrusion detection, and threat remediation.

Security, operations, and IT personnel in industrial environments such as manufacturing, utilities, and various critical infrastructure utilize OT security tools. The OT environment requires special security considerations because of the combination of software and hardware and the difficulties around adapting IT solutions to the OT environment. OT systems typically have long update cycles, making the speed and frequency of IT software updates and patches impractical and making solutions tailored to this unique environment necessary.

These products overlap with [OT secure remote access software](https://www.g2.com/categories/ot-secure-remote-access). However, unlike OT secure remote access tools, OT security platforms have advanced threat detection and incident response capabilities.

OT security tools are often marketed alongside [Internet of Things (IoT) security solutions](https://www.g2.com/categories/iot-security-solutions). However, the latter supports items such as smart home devices and wearable technology that are not considered operational technologies. There can be some overlap with [industrial IoT software](https://www.g2.com/categories/industrial-iot), but these solutions lack the advanced security features found in OT security tools. Similarly, OT security tools share some functionality with [supervisory control and data acquisition (SCADA) software](https://www.g2.com/categories/supervisory-control-and-data-acquisition-scada), but like industrial IoT, SCADA software lacks advanced security features such as intrusion detection and remediation.

To qualify for inclusion in the OT security category, a product must:

- Discover and monitor assets, inventory, and networks in OT environments
- Detect network intrusions and other security incidents
- Respond to vulnerabilities or threats and facilitate remediation

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