IoT Security

IoT devices now outnumber traditional endpoints in most enterprise environments. From printers and cameras to medical equipment and building systems, these devices enable automation and efficiency, but they also expand the attack surface in ways traditional security tools were never designed to manage.

Portnox delivers cloud-native IoT security that helps organizations discover, identify, and control connected devices, without agents or appliances.

Cloud-native IoT security essentials that close the gap on your zero trust security strategy.

Shadow IoT

Why IoT security is a growing challenge

Many IoT devices were not built with enterprise-grade security in mind. Organizations commonly face IoT security risks such as:

  • Default or hard-coded credentials
  • Limited or nonexistent patching mechanisms
  • Unsupported or embedded operating systems
  • Minimal native authentication capabilities

IoT devices are also frequently deployed outside of formal IT processes, creating Shadow IoT that operates beyond traditional security controls. These gaps make it difficult to detect unauthorized devices, enforce consistent access policies, or prevent lateral movement once a device is compromised.

IoT Security Use Cases

Portnox supports a wide range of IoT security use cases where visibility, access control, and compliance are critical:

  • Healthcare environments — Secure medical devices and clinical systems while supporting compliance with HIPAA and protecting patient data.
  • Manufacturing and operational technology (OT) — Control access to industrial devices and sensors, reducing the risk of production disruption and lateral movement between IT and OT networks.
  • Retail and smart facilities — Secure point-of-sale systems, cameras, kiosks, and building automation devices without relying on device-level agents.
  • Enterprise and campus networks — Gain visibility into printers, conferencing systems, and other unmanaged devices while enforcing segmentation and least-privilege access.

These use cases demonstrate how agentless NAC and zero trust enforcement extend security to environments where traditional endpoint controls fall short.

How Portnox Delivers IoT Security

You cannot secure what you cannot see.

Portnox provides continuous, agentless visibility into every IoT device connecting to the network, including unmanaged and embedded devices that cannot support agents or traditional authentication methods. This visibility spans wired and wireless environments and delivers the context security teams need to assess risk in real time.

Using advanced fingerprinting and profiling, Portnox identifies:

  • Device type and functional category
  • Manufacturer and operating system
  • Network behavior and communication patterns
  • Changes that may indicate misconfiguration, compromise, or misuse

This intelligence enables more accurate IoT device classification, faster threat detection, and informed access decisions based on actual device behavior rather than assumptions.

Why Organizations Choose Portnox

Many legacy IoT and NAC platforms rely on appliance-based architectures that are costly to deploy and slow to adapt to dynamic environments. Portnox delivers a modern alternative by providing:

  • Cloud-native platform without hardware dependencies
  • Agentless discovery and enforcement across IoT and OT devices
  • Standards-based NAC built on 802.1X, RADIUS, and certificate-based authentication
  • Segment IoT devices into approved network zones
  • Prevent access to sensitive applications and data
  • Detect abnormal behavior and automatically revoke access
  • Continuous posture assessment rather than one-time checks
  • Faster deployment and lower operational complexity

This approach aligns IoT security with zero trust principles and supports hybrid, distributed enterprise environments.

Secure your IoT environment with cloud-native access control

As IoT deployments continue to grow, organizations need security controls designed for scale, visibility, and unmanaged devices. Portnox delivers cloud-native IoT security that combines agentless discovery, access control, and automated enforcement — without agents or appliances.

Start your free 30-day trial or request a demo to see how Portnox secures IoT devices across modern enterprise networks.

Explore trends in zero trust for 2025 and beyond

Staying ahead in IT means strengthening cybersecurity—and zero trust architectures now lead the charge. But let’s face it: embracing zero trust can feel daunting. With so many tools and complexities, it’s easy to lose your way.

To understand how organizations navigate zero trust, Portnox teamed up with TechTarget. We surveyed hundreds of IT and cybersecurity professionals across North America. Discover the insights we uncovered in our Trends in Zero Trust report.

White Paper

Don't leave IoT security to chance—it's time to adopt IoT device trust

Portnox’s fully cloud-native IoT Device Trust suite helps you stay secure no matter how many things connect to your network. No more wondering if that random MAC address is the 3rd floor printer or a rogue laptop trying to breach the firewall – we can tell you the device type, name, manufacturer, OS, and more. Take your security to the next level by creating segmentation and access control policies so your camera isn’t an entry point for your customer database. And even better, we’ll tell you if that smart TV suddenly starts passing traffic like a laptop so you can quarantine it or remove it from the network entirely. Download our white paper to learn how it all works and how IoT fingerprinting can bring your zero trust program to new heights.
IoT Security

FAQs

IoT security solutions protect connected devices and the networks they operate on by providing visibility, access control, and continuous monitoring. These capabilities help organizations reduce risk, prevent unauthorized access, and manage large volumes of unmanaged devices more securely.

IoT security is important because many connected devices lack strong built-in protections. When unmanaged, they can be exploited to access sensitive systems, move laterally across networks, or disrupt critical operations.

Common IoT security risks include unknown or unmanaged devices, weak or shared credentials, outdated firmware, limited monitoring, and lack of segmentation. These gaps increase exposure to unauthorized access and security incidents.

Network Access Control improves IoT security by verifying devices before granting access and enforcing segmentation and least-privilege policies. NAC limits what devices can access if compromised and enables continuous enforcement across the network.

Zero trust applies to IoT environments by requiring continuous verification of devices rather than assuming trust. Devices are granted only the minimum access required, reducing exposure and limiting the impact of compromise.

Portnox secures agentless IoT devices using network-based identification, fingerprinting, and NAC policy enforcement. This approach allows organizations to control access and monitor behavior without installing software on the device.

Yes. IoT security solutions that provide visibility, access control, and audit logging help organizations demonstrate alignment with regulatory and industry frameworks while improving overall security posture.

Network segmentation reduces IoT security risks by isolating devices into approved network zones with limited access. If a device is compromised, segmentation helps contain the threat and prevent lateral movement to sensitive systems. Portnox enforces segmentation dynamically based on device type, behavior, and security posture.

IoT security solutions detect threats through continuous monitoring of device behavior to identify anomalies or signs of compromise. Instead of relying on one-time access decisions, Portnox evaluates devices throughout the session and can automatically restrict or isolate those exhibiting unusual or high-risk activity.

Related Reading

Webinars

Next Generation ZTNA: The Last Mile of Zero Trust

Reports

ROI Snapshot of Portnox Cloud: Forrester-Validated Business Impact

Webinars

Taming Tool Sprawl: How Portnox Unifies Security Through Smarter Integrations

WEBINAR: Next Generation ZTNA (April 16 @ 12pm ET)

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