# Best OT Security Tools Software

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

**Total Products under this Category:** 47

### Category Stats (Sep 2026)

- **Average Rating:** 4.51/5 The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** Armis (+0.18%) - Among all products in this category, Armis recorded the largest rating increase compared to last month

_Last updated: September 01, 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
- 47+ 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:** 117

#### 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:** 36% 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 **comprehensive threat protection** of Palo Alto Networks IoT/OT Security, ensuring safety for all connected devices.
- Users value the **strong security features** of Palo Alto Networks IoT/OT Security, ensuring comprehensive protection for IoT environments.
- Users appreciate the **effortless security management** of Palo Alto Networks IoT/OT Security, enhancing protection with minimal manual effort.
- Users value the **deep visibility and asset discovery** features of Palo Alto Networks IoT/OT Security for enhanced security management.
- Users value the **full visibility and continuous monitoring** of IoT/OT devices, enhancing security and reducing risk.

##### Cons

- Users note that the **pricing structure is expensive** , which can be challenging for varying business sizes and budgets.
- Users find the **difficult learning curve** of Palo Alto Networks IoT/OT Security challenging, especially during initial setup and configuration.
- Users find the **complex setup** of Palo Alto Networks IoT/OT Security challenging, particularly for inexperienced teams.
- Users find **difficult configuration** a challenge with Palo Alto Networks IoT/OT Security, impacting deployment and ongoing management efforts.
- Users find the **required expertise** for managing Palo Alto Networks IoT/OT Security can be a barrier for teams.

#### 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:** 14

#### Who Is the Company Behind Armis?

- **Seller:** [ServiceNow](https://www.g2.com/sellers/servicenow)
- **Company Website:** www.servicenow.com
- **Year Founded:** 2004
- **HQ Location:** Santa Clara, CA
- **Twitter:** @servicenow  
55,548 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=8f146dd2da6255ae21db2f89043b268912043fe250660dfee40ba3c0574bb1ba&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F29352%2F&secure%5Burl_type%5D=linkedin_company_website)  
35,081 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 50% Large, 29% Small

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

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **intuitive interface** of Armis, which makes accessing insights and managing tasks effortless.
- Users value Armis for its **effective asset management** , providing clear insights and risk assessments in real-time.
- Users appreciate Armis for its **intuitive and user-friendly interface** , making it easy to manage system risks and insights.
- Users value the **deep visibility** Armis offers, providing comprehensive insights and context into their network environments.
- Users praise the **responsive customer support** of Armis, enhancing their overall experience and problem-solving capabilities.

##### Cons

- Users report **integration issues** with Armis, making it challenging to configure for reliable information.
- Users find the **additional costs** for add-on modules to be quite high, impacting overall satisfaction with Armis.
- Users find the **complex setup** challenging, requiring effort to configure integrations and additional modules that are expensive.
- Users find the **difficult setup** of Armis frustrating, though integrations work well once configured.
- Users experience **excessive notifications** from Armis, finding the initial alert noise overwhelming and requiring further integration.

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

**["Agentless Asset Visibility with Powerful Integrations and an Intuitive Query Box"](https://www.g2.com/survey_responses/armis-review-13367149)**

**Rating:** 4.5/5.0 stars

_— Noa D._

[Read full review](https://www.g2.com/survey_responses/armis-review-13367149)

**["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% Small

#### 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 appreciate the **true OT awareness and visibility** provided by Tenable OT Security for complex environments.
- Users appreciate the **enhanced OT visibility** of Tenable OT Security, facilitating security team efforts without operational disruption.
- Users value the **comprehensive visibility** Tenable OT Security provides, enhancing understanding and actionability in complex OT environments.
- Users value the **full visibility into OT assets** provided by Tenable OT Security, enabling quick risk remediation.
- Users commend the **detection efficiency** of Tenable OT Security, facilitating swift risk remediation without disrupting operations.

##### Cons

- Users find the **limited features** of Tenable OT Security restrictive, impacting advanced reporting and asset management tasks.
- Users find the **complexity of asset management** in Tenable OT Security makes asset discovery tedious and reporting limited.
- Users find the **pricing higher than expected** for smaller plants, complicating access to Tenable OT Security's features.
- Users find the **asset management process complicated** , making the discovery of OT assets a tedious task.
- Users find the **inadequate reporting** and customization limiting, alongside complexities in pricing and licensing.

#### 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 value the **visibility of the OT environment** Claroty provides, enhancing security and asset management.
- Users value the **extensive features** of Claroty that enhance security across diverse IT infrastructures.
- Users value the **seamless integration with third-party vendors** , enhancing their operational technology environment effectively.
- Users value the **robust security features** of Claroty, ensuring protection across diverse network environments.
- Users praise the **simplicity** of Claroty, finding it easy to use and navigate effectively.

##### Cons

- Users find the **difficult learning curve** of Claroty challenging, requiring extensive fine-tuning and handling of software bugs.
- Users find that **technical issues** like bugs and fine-tuning complicate the deployment of Claroty significantly.
- Users find the **setup process overwhelming** due to the extensive feature set, leading to initial usability difficulties.

#### 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?

**["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)

**["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)

### [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 **top-notch security** features of Forescout, effectively protecting sensitive information and ensuring secure resource access.
- Users value the **instant discovery and classification** features of Forescout Platform for enhanced network security.
- Users praise the **instant discovery and visibility** of all IP-based devices, enhancing overall network management and security.
- Users value the **instant discovery and classification** of endpoints by Forescout, enhancing their network security efficiency.
- Users value the **customization capabilities** of Forescout Platform, allowing tailored solutions for diverse network environments.

##### Cons

- Users find the **complex implementation** of Forescout Platform challenging due to numerous dependencies and insufficient support documentation.
- Users struggle with **dependency issues** related to integration and support, causing delays and complicating implementation.
- Users face **integration issues** with Forescout Platform, citing complexity, lack of documentation, and slow TAC support.
- Users experience significant **performance issues** with Forescout Platform, citing complexity, slow support, and stability concerns.
- Users report **poor customer support** , with slow TAC responses and inadequate documentation hindering problem resolution.

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

**["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)

**["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)

#### 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 and implementation** of Microsoft Defender for IoT, making threat management straightforward.
- Users appreciate the **easy integrations** of Microsoft Defender for IoT, which enhance their security workflows and confidence.
- Users appreciate the **reliability** of Microsoft Defender for IoT, ensuring robust protection against cyber threats seamlessly.
- Users value the **real-time monitoring and alerting capabilities** of Microsoft Defender for IoT for proactive threat management.
- Users appreciate the **effective cyber security management** of Microsoft Defender for IoT, enhancing their protection and peace of mind.

##### Cons

- Users find Microsoft Defender for IoT to be **very expensive** , especially burdensome for small businesses with tight budgets.
- Users find that Microsoft Defender for IoT has a steep **learning curve** , making initial setup challenging and time-consuming.
- Users report facing **integration challenges** due to limited interoperability and a developing solution that complicates implementation.
- Users find **installation issues** with Microsoft Defender for IoT, facing challenges with setup and compatibility.
- Users note the **missing features** in Microsoft Defender for IoT, reflecting its ongoing development and need for improvement.

#### 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 highlight the **customization** features of Nozomi Networks Platform, enhancing their ability to monitor network activities effectively.
- Users value the **effective detection algorithms** of Nozomi Networks Platform, which accurately identify intrusions and malicious traffic.
- Users commend the **detection efficiency** of Nozomi Networks Platform, effectively identifying intrusions and analyzing traffic patterns.
- Users value Nozomi's **detection algorithms** for identifying intrusions and its excellent interface for traffic pattern visualization.
- Users value the **advanced threat detection** capabilities of Nozomi Networks, identifying intrusions and malicious traffic effectively.

##### Cons

- Users find the Nozomi Networks Platform **expensive** , yet it aligns with cybersecurity budget constraints against competitors.

#### 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)

### [Seceon aiSecOT360](https://www.g2.com/products/seceon-aisecot360/reviews)

Seceon aiSecOT360 is a standalone AI/ML-powered OT/ICS security platform designed to protect critical infrastructure and industrial control systems without disrupting operations. It deploys passively through network TAP or SPAN connections, requiring zero agents on PLCs, RTUs, DCS, HMIs, or other industrial devices. aiSecOT360 provides real-time visibility and threat detection across 70+ industrial protocols, including Modbus, DNP3, IEC 61850, OPC-UA, PROFINET, and BACnet. It automatically discovers OT assets, establishes behavioral baselines within seven days, and continuously detects anomalous activity, known threats, and advanced ICS attack patterns, including TRITON, Industroyer2, Volt Typhoon, and Stuxnet-class threats. The platform combines automated asset discovery, behavioral analytics, AI-driven threat detection, and continuous monitoring to help security and operations teams identify risks early while maintaining the availability, safety, and reliability of industrial environments. Built-in compliance capabilities support frameworks including NERC CIP v7, IEC 62443, and NIST SP 800-82. Designed for Energy & Utilities, Oil & Gas, Water Treatment, Manufacturing, Rail, and Smart Buildings, Seceon aiSecOT360 enables rapid deployment, operationally safe monitoring, and scalable protection across modern critical infrastructure environments.

**Average Rating:** 5.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind Seceon aiSecOT360?

- **Seller:** [Seceon](https://www.g2.com/sellers/seceon)
- **Year Founded:** 2015
- **HQ Location:** Westford, Massachusetts, United States
- **Twitter:** @Seceon\_Inc  
1,209 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c548c27c84cdde2cb429902e49b0386cfe3870a6a59ebda92731890d0b86b924&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fseceon%2F&secure%5Burl_type%5D=linkedin_company_website)  
177 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 50% Small, 50% Large

#### What Are Recent G2 Reviews of Seceon aiSecOT360?

**["Effectively Bridges OT and IT Without Losing Meaning in Translation."](https://www.g2.com/survey_responses/seceon-aisecot360-review-13389846)**

**Rating:** 5.0/5.0 stars

_— Mark v._

[Read full review](https://www.g2.com/survey_responses/seceon-aisecot360-review-13389846)

**["Seceon OTM’s All-in-One Security Consolidation with Predictable Asset-Based Pricing"](https://www.g2.com/survey_responses/seceon-aisecot360-review-13397076)**

**Rating:** 5.0/5.0 stars

_— Verified User in Financial Services_

[Read full review](https://www.g2.com/survey_responses/seceon-aisecot360-review-13397076)

### [Shieldworkz OT Security Platform](https://www.g2.com/products/shieldworkz-ot-security-platform/reviews)

Shieldworkz OT Security Platform is an AI-powered solution purpose-built for Operational Technology (OT) environments. It delivers unmatched asset visibility, threat detection, and vulnerability management across industrial networks. With agentic AI-based adaptive posture management, Shieldworkz continuously monitors, detects, and responds to risks in real time while ensuring compliance with IEC 62443, NIST CSF, NERC CIP, and NIS2 standards. Its non-intrusive network detection, protocol-aware deep packet inspection, and OT-specific threat intelligence deliver precise insights with minimal false positives. Fast to deploy and highly scalable, Shieldworkz empowers enterprises to strengthen security, achieve continuous compliance, and reduce risk across all OT assets.

**Average Rating:** 4.5/5.0

**Total Reviews:** 1

#### Who Is the Company Behind Shieldworkz OT Security Platform?

- **Seller:** [Shieldworkz](https://www.g2.com/sellers/shieldworkz)
- **Year Founded:** 2024
- **HQ Location:** Al Hisn, AE
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=f84c828c06ad0ba346aadfa0ac6e2149e66b1be86cfded73fba0f04c92397b62&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fshieldworkz%2F&secure%5Burl_type%5D=linkedin_company_website)  
40 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Large

#### What Are Recent G2 Reviews of Shieldworkz OT Security Platform?

**["Highly Customisable, Easy to Configure, and Packed with Integrations"](https://www.g2.com/survey_responses/shieldworkz-ot-security-platform-review-13195414)**

**Rating:** 4.5/5.0 stars

_— adarsh ._

[Read full review](https://www.g2.com/survey_responses/shieldworkz-ot-security-platform-review-13195414)

### [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

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- [Managed Detection and Response (MDR)](/categories/managed-detection-and-response-mdr)
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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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