⚡ Quick Answer
By 2026, the average enterprise manages over 10,000 connected IoT devices—yet most cyber insurance policies still exclude or severely limit coverage for breaches originating from smart devices. Businesses face coverage gaps ranging from unpatched sensor networks to legacy industrial controllers, and insurers are imposing premium surcharges of 15–40% for organizations that cannot demonstrate robust IoT security hygiene.
The Internet of Things has transformed how businesses operate. From smart HVAC systems and connected security cameras to industrial sensors and medical devices, IoT is everywhere. But with that convenience comes an expanding attack surface that traditional cyber insurance policies were never designed to address. If your organization relies on connected devices—and in 2026, virtually every organization does—understanding how IoT security breaches intersect with your cyber insurance coverage is no longer optional. It is a business-critical imperative.
This guide breaks down the current state of IoT-related cyber insurance in 2026: where coverage falls short, how premiums are shifting, and what you can do to close the gaps before a breach forces you to find out the hard way.
📌 Key Takeaways
- IoT device breaches are surging: Over 60% of enterprises experienced at least one IoT-originated security incident in 2025, a figure expected to climb as device counts double by 2028.
- Coverage gaps are widespread: Most standard cyber liability policies exclude breaches traced to unmanaged or unpatched IoT devices, leaving businesses exposed to six-figure losses.
- Premiums are rising for IoT-heavy organizations: Insurers apply surcharges of 15–40% when IoT inventories are large or poorly documented.
- Device inventory is now mandatory: Leading carriers require a complete, up-to-date IoT device inventory before binding or renewing coverage.
- Zero Trust architecture reduces costs: Organizations that implement Zero Trust for IoT networks see average premium reductions of 12–18%.
- Regulatory pressure is intensifying: The EU Cyber Resilience Act and proposed U.S. IoT security standards are forcing insurers to re-evaluate risk models for connected devices.
The IoT Threat Landscape in 2026
The scale of IoT deployment has reached staggering levels. According to analyst estimates, there are now more than 18 billion connected IoT devices in operation globally, with enterprise environments accounting for roughly 40% of that total. A mid-sized manufacturing firm might operate 5,000 to 15,000 sensors, controllers, and smart devices across its facilities. A hospital network could easily manage 20,000 connected medical devices. Even small businesses routinely deploy dozens of smart cameras, thermostats, access control systems, and point-of-sale terminals.
This explosive growth has created an equally explosive risk surface. The average cost of an IoT-related data breach reached $4.8 million in 2025, according to industry benchmarks, with healthcare and manufacturing hit hardest. Attackers increasingly target IoT devices not as endpoints in themselves, but as entry points into broader corporate networks. A single compromised smart thermostat or networked printer can provide lateral movement paths to critical databases, cloud infrastructure, and administrative credentials.
What makes IoT risk particularly dangerous is the heterogeneity of the device ecosystem. Unlike laptops and servers that run a handful of operating systems, IoT devices span thousands of manufacturers, each with their own firmware, update cadence, and security model—or lack thereof. Many devices ship with hardcoded credentials, rarely receive security patches, and lack even basic encryption. The result is a sprawling, poorly monitored attack surface that most IT teams struggle to catalog, let alone secure.
For insurers, this represents a fundamentally different risk profile than traditional IT. When a breach traces back to an unpatched building management system or a rogue connected sensor, the question of liability, negligence, and policy applicability becomes far more complex than a standard phishing incident or ransomware attack.
How IoT Breaches Happen: Common Attack Vectors
Understanding how IoT devices are exploited helps clarify why insurers are tightening coverage. The most common attack vectors in 2026 include:
Default and hardcoded credentials. Despite years of warnings, a significant percentage of IoT devices continue to ship with factory-default usernames and passwords that are never changed. Attackers use automated scanners to find these devices within minutes of their connection to the internet. Once accessed, the device becomes a foothold for deeper network penetration.
Unpatched firmware vulnerabilities. Many IoT manufacturers release security updates sporadically—or never. Industrial control systems, legacy medical devices, and building automation controllers may run firmware that is years out of date, carrying known CVEs that are trivially exploitable. Enterprises often defer patching because updates require planned downtime or because the manufacturer no longer supports the device.
Insecure communication protocols. A surprising number of IoT devices transmit data in plaintext or use outdated encryption standards. Man-in-the-middle attacks can intercept sensor data, command signals, or authentication tokens traveling between devices and their management platforms.
Botnet conscription and DDoS amplification. Compromised IoT devices are frequently conscripted into botnets used to launch distributed denial-of-service attacks against third parties. If your devices participate in a DDoS attack—even unknowingly—your organization may face liability claims from victims, adding another layer of insurance complexity.
Supply chain and third-party device compromises. Many IoT devices rely on third-party components, cloud management platforms, or OTA update mechanisms. A compromise at any point in this supply chain can affect thousands of devices simultaneously. The supply-chain cyber attack insurance coverage guide explores this broader risk in detail, but it is especially relevant for IoT because devices often have opaque and complex supply chains.
Physical tampering and side-channel attacks. Unlike servers in a locked data center, IoT devices are physically dispersed across offices, factory floors, warehouses, and remote sites. Physical access makes them vulnerable to tampering, firmware extraction, and hardware-based attacks that are difficult to detect remotely.
Cyber Insurance Coverage Gaps for IoT
This is where most businesses get caught off guard. Standard cyber liability and data breach insurance policies were written with traditional IT infrastructure in mind—servers, workstations, email systems, and cloud services. IoT devices introduce risk categories that many policies simply do not address, or actively exclude.
The “Unmanaged Device” Exclusion
A growing number of policies include clauses that exclude coverage for breaches originating from devices that are not inventoried, monitored, or managed under the organization’s formal cybersecurity program. If an attacker enters through a smart TV in a conference room that no one bothered to include in the asset register, the insurer may deny the claim on the basis that the device was unmanaged. Given that most organizations have incomplete IoT inventories, this exclusion is alarmingly broad.
Bodily Injury and Physical Damage
IoT breaches can cause physical consequences—overheating equipment, disabling safety systems, manipulating medical devices, or triggering false alarms. Traditional cyber policies typically exclude bodily injury and physical property damage, deferring to general liability or property insurance. But general liability policies often exclude cyber-related causes, creating a coverage gap where neither policy responds to an IoT-triggered physical incident. Our cyber liability coverage gap analysis walks through similar intersection issues in more detail.
Third-Party Liability from Botnet Participation
If your compromised IoT devices are used in a botnet that attacks another organization, you may face third-party claims. However, proving that you exercised reasonable security over every connected device is difficult, and policies may require you to demonstrate compliance with specific security standards that few organizations apply comprehensively to their IoT fleet.
Regulatory and Compliance Exposures
New regulations, including the EU Cyber Resilience Act which took effect in 2024 with enforcement ramping through 2026, impose security requirements on connected products and the organizations that deploy them. Non-compliance can result in fines and enforcement actions that may not be covered under standard cyber policies if the underlying violation stems from IoT-specific requirements.
Business Interruption from OT Convergence
As IT and operational technology networks converge, IoT breaches increasingly cause operational downtime. Manufacturing lines stop, logistics systems freeze, and building systems fail. Business interruption coverage under cyber policies often requires proof of a direct cyber attack, but IoT failures can blur the line between a malicious attack and a device malfunction triggered by a security vulnerability. Insurers may dispute whether the triggering event qualifies.
Premium Impact: How IoT Devices Affect Your Rates
Insurers are not ignoring IoT risk—they are pricing it aggressively. Here is how IoT deployments influence cyber insurance premiums in 2026:
IoT Device Count as a Rating Factor
Leading insurers now ask about IoT device counts during the application process. Organizations with more than 1,000 connected devices typically face additional underwriting scrutiny, and those with more than 10,000 may trigger specialized risk assessments. Premium surcharges for large, undocumented IoT deployments range from 15% to 40%, depending on the industry and the insurer’s assessment of the organization’s security maturity.
Industry-Specific Surcharges
Healthcare and manufacturing face the steepest IoT-related premium increases. Medical IoT devices (infusion pumps, imaging systems, patient monitors) carry high regulatory risk and potential for physical harm. Industrial IoT devices (SCADA systems, PLCs, sensors) control critical infrastructure where breaches cause physical damage and extended downtime. Insurers in these sectors are applying IoT-specific sublimits and coinsurance requirements.
Security Posture Discounts
Not all premium impacts are negative. Organizations that demonstrate strong IoT security practices can qualify for meaningful discounts. Implementing network segmentation that isolates IoT traffic, maintaining a comprehensive device inventory with automated discovery tools, enforcing firmware update policies, and deploying IoT-specific monitoring solutions can collectively reduce premiums by 12–20%. As explored in our guide on zero-trust architecture cyber insurance premium savings, adopting Zero Trust principles for IoT networks is one of the most effective strategies for cost reduction.
Claims History and IoT Incidents
A single IoT-related claim can have an outsized impact on future premiums. Insurers view IoT-originated breaches as indicators of systemic risk—one compromised device suggests that hundreds or thousands of similar devices may be equally vulnerable. A business that files a claim for an IoT breach can expect premium increases of 25–50% at renewal, compared to 15–25% for traditional cyber incidents. For guidance on managing the claims process effectively, see our cyber insurance claims process guide.
Steps to Secure IoT Devices and Reduce Premiums
Closing IoT coverage gaps and controlling premium costs requires a proactive, structured approach to IoT security. Here are the steps that matter most in 2026:
1. Build a Complete IoT Device Inventory
You cannot secure what you cannot see. Deploy automated device discovery tools that scan your networks continuously for connected devices. Classify every device by type, manufacturer, firmware version, network location, and criticality. This inventory is not just a security best practice—it is increasingly a prerequisite for obtaining cyber insurance coverage.
2. Segment IoT Traffic from Corporate Networks
IoT devices should never share flat networks with critical business systems. Implement VLAN segmentation or microsegmentation to isolate IoT traffic. Place IoT devices behind dedicated firewalls with strict egress filtering. If a smart camera is compromised, the attacker should not be able to reach your financial databases.
3. Enforce Firmware and Patch Management
Establish a formal policy for IoT firmware updates. For devices that cannot be patched immediately, implement compensating controls such as network isolation, enhanced monitoring, or virtual patching through intrusion prevention systems. Document your patch management process—insurers will ask about it.
4. Eliminate Default Credentials
Every IoT device should be provisioned with unique, strong credentials before deployment. For devices that support certificate-based authentication or network-level access controls, implement those mechanisms. Disable unnecessary services and ports on every device.
5. Deploy IoT-Specific Monitoring
Traditional SIEM and endpoint detection tools often lack visibility into IoT devices. Invest in IoT-specific security platforms that can detect anomalous behavior, command-and-control communication, and lateral movement patterns unique to connected devices. Many insurers now offer premium discounts for organizations using certified IoT security monitoring solutions.
6. Implement Zero Trust for IoT Networks
Apply Zero Trust principles to every IoT device: never trust, always verify. Require continuous authentication, enforce least-privilege access, and monitor all device-to-device and device-to-cloud communication. This approach not only strengthens your security posture but also signals to insurers that you take IoT risk seriously. Our small business cyber insurance checklist includes additional foundational steps that apply to IoT environments as well.
7. Document Everything for Underwriters
When applying for or renewing cyber insurance, provide detailed documentation of your IoT security program: inventory reports, network architecture diagrams showing segmentation, patch management logs, monitoring tool certifications, and incident response playbooks specific to IoT scenarios. Thorough documentation can significantly improve underwriting outcomes.
What to Look for in an IoT-Aware Cyber Policy
Not all cyber insurance policies are created equal when it comes to IoT coverage. When evaluating policies, look for these critical features:
Explicit IoT coverage language. The policy should specifically address IoT devices, either by name or by reference to connected operational technology. Avoid policies that rely solely on generic “computer system” definitions that may not encompass IoT endpoints.
Clear definitions of managed vs. unmanaged devices. Understand what the insurer considers a “managed” device. If the policy excludes breaches from unmanaged devices, ensure your inventory and security program meet the insurer’s definition of “managed.”
Bodily injury and physical damage endorsements. If your IoT devices control physical systems—heating, manufacturing, medical equipment—look for policies that offer endorsements bridging the gap between cyber liability and physical damage coverage.
Third-party liability for botnet participation. Verify that the policy covers claims arising from your devices being used in attacks against third parties, even if the attack originated without your direct involvement.
Business interruption triggers for IoT incidents. Ensure the policy’s business interruption coverage explicitly includes incidents originating from IoT device compromises, not just traditional IT system breaches.
Sublimits and coinsurance transparency. Many policies cap IoT-related coverage at lower amounts than the overall policy limit. Understand these sublimits and consider purchasing additional coverage if your IoT exposure is significant.
Incident response support for IoT. Check whether the insurer’s incident response team includes IoT forensics capabilities. Responding to an IoT breach requires different expertise than a traditional data breach, and the right response team can significantly reduce total incident costs.
The IoT security landscape is evolving faster than the insurance market can adapt. But by understanding where coverage gaps exist, how premiums are calculated, and what steps you can take to demonstrate strong IoT security hygiene, you can position your organization to obtain meaningful protection at a manageable cost. Use our ransomware insurance coverage check tool alongside this guide to assess your overall cyber insurance readiness, including IoT-specific exposures.
Frequently Asked Questions About IoT Cyber Insurance Coverage
Does standard cyber insurance cover IoT device breaches?
Most standard cyber liability policies were not designed with IoT devices in mind. Many include exclusions for breaches originating from unmanaged or undocumented connected devices. To ensure your IoT devices are covered, you need a policy that explicitly addresses IoT endpoints or includes endorsements that extend coverage to connected operational technology. Always verify the policy language with your broker before assuming IoT incidents are covered.
How much do cyber insurance premiums increase for businesses with many IoT devices?
Premium surcharges for IoT-heavy organizations typically range from 15% to 40%, depending on the number of devices, the industry, and the organization’s security posture. Healthcare and manufacturing companies face the highest surcharges due to the physical risk and regulatory exposure associated with medical and industrial IoT devices. However, organizations that demonstrate strong IoT security practices—including device inventory management, network segmentation, and continuous monitoring—can often negotiate lower surcharges or qualify for premium discounts.
What is the “unmanaged device” exclusion in cyber insurance policies?
An unmanaged device exclusion is a policy clause that denies coverage for breaches traced to connected devices that are not inventoried, monitored, or secured under the organization’s formal cybersecurity program. Because most businesses have incomplete visibility into their IoT fleet, this exclusion can be remarkably broad. A compromised smart printer, security camera, or HVAC controller that was never added to the asset register could fall outside coverage. Maintaining a comprehensive IoT inventory is the single most important step to avoid this trap.
Can my company be held liable if our IoT devices are used in a botnet attack against someone else?
Yes. If your organization’s compromised IoT devices participate in a distributed denial-of-service attack or other malicious activity targeting a third party, you may face liability claims. Plaintiffs can argue that you failed to exercise reasonable security over your connected devices. Standard cyber policies may or may not cover these third-party claims, so it is essential to verify that your policy includes coverage for botnet-related liability arising from your IoT infrastructure.
What security measures do insurers require for IoT devices?
While requirements vary by insurer and industry, common expectations include a complete and up-to-date IoT device inventory, network segmentation isolating IoT traffic from critical business systems, firmware patch management policies, elimination of default credentials on all connected devices, IoT-specific security monitoring and anomaly detection, and documented incident response procedures for IoT-originated breaches. Organizations implementing Zero Trust architecture for their IoT networks typically receive the most favorable underwriting terms.
Does cyber insurance cover physical damage caused by an IoT device hack?
Standard cyber liability policies generally exclude bodily injury and physical property damage, deferring to general liability or property insurance. However, general liability policies often exclude cyber-related causes. This creates a coverage gap for scenarios where an IoT breach causes physical harm—for example, a hacked building management system causing equipment overheating, or a compromised medical device injuring a patient. To address this gap, look for cyber policies that offer physical damage endorsements specifically designed for IoT-related incidents.
How does the EU Cyber Resilience Act affect IoT cyber insurance requirements?
The EU Cyber Resilience Act, which entered into force in 2024 with enforcement escalating through 2026, imposes security requirements on connected products sold in the EU market. Organizations deploying non-compliant IoT devices may face regulatory fines and enforcement actions. Cyber insurers are increasingly factoring CRA compliance into their underwriting decisions. Businesses that cannot demonstrate compliance with applicable IoT security standards may face coverage exclusions for regulatory penalties or higher premiums to account for the elevated enforcement risk.
What should I look for when choosing a cyber insurance policy for IoT-heavy operations?
Prioritize policies with explicit IoT coverage language rather than generic “computer system” definitions. Verify that the policy covers business interruption triggered by IoT incidents, third-party liability for botnet participation, and regulatory penalties under emerging IoT security regulations. Check for sublimits that cap IoT-related payouts below the overall policy limit, and consider purchasing additional coverage if needed. Finally, confirm that the insurer’s incident response team includes IoT forensics expertise, as responding to an IoT breach requires specialized capabilities that traditional breach response teams may lack.
Estimate Your Cyber Insurance Costs with IoT in Mind
Understanding how IoT devices affect your cyber insurance coverage and premiums is the first step. The next step is getting an accurate estimate tailored to your organization’s specific risk profile—including your IoT footprint.
Use our Cyber Insurance Cost Estimator to model your expected premiums based on your industry, revenue, device count, security posture, and coverage needs. The tool factors in IoT-specific risk variables so you can see exactly how connected devices influence your pricing—and what steps will have the greatest impact on reducing your costs.