What Is the Internet of Things?
The Internet of Things (IoT) is a network of physical devices embedded with sensors, software, and connectivity that enables them to collect, exchange, and act on data over the internet.
IoT devices comprise everything from common business equipment to specialized machinery, including:
- Printers
- Security cameras
- Badge readers
- Industrial machinery
- Medical devices
- Environmental sensors
- Connected vehicles
Unlike traditional endpoints such as laptops or servers, IoT devices often operate continuously and autonomously, collecting and transmitting data without direct user interaction.
This always-on nature makes IoT valuable for automation and efficiency, but it also introduces persistent security exposure. Each connected device represents both a business enabler and a potential entry point into an organization’s environment.
Why Does IoT Security Matter?
The adoption of IoT has accelerated rapidly across industries. Organizations deploy connected devices to monitor operations, improve safety, automate workflows, and collect real-time data. At the same time, this growth has dramatically expanded the attack surface.
Many IoT devices are introduced outside of traditional IT procurement processes. They are often deployed quickly to meet operational needs, with limited consideration for long-term security management. As a result, security teams may not know which devices are connected, what data they transmit, or how they communicate with other systems.
This lack of visibility creates material risk. According to the Arctic Wolf 2025 Trends Report, only 40 percent of security leaders report full endpoint coverage, a figure that typically excludes IoT devices altogether. These unmanaged devices frequently operate without monitoring, creating blind spots attackers can exploit.
What Are The Unique Security Challenges of IoT?
IoT devices differ from traditional endpoints in ways that complicate security, including:
- Many are designed primarily for cost efficiency and functionality rather than resilience
- Security features such as encryption, strong authentication, and secure update mechanisms are often limited or absent
- Some devices cannot be patched at all, while others stop receiving manufacturer support shortly after deployment
Additionally, default credentials remain a widespread issue. Attackers maintain extensive lists of factory-default usernames and passwords for popular IoT models, allowing rapid compromise at scale. Even when credentials are changed, many devices lack support for advanced authentication controls.
Visibility is another persistent challenge. IoT devices generate large volumes of network traffic that can be difficult to distinguish from normal operations. The Arctic Wolf 2025 Security Operations Report notes that the average customer environment produces nearly 33 billion observations per year, illustrating how difficult it can be to identify malicious behavior without contextual analysis.
What Are Common Threats Targeting IoT Devices?
IoT devices are frequently targeted because they provide durable access with minimal oversight. Here are just a few of the most common IoT threats:
Botnet recruitment: Compromised devices are enrolled into large networks used to launch distributed denial-of-service attacks or conduct scanning and reconnaissance. These devices are attractive to attackers because they are always online and rarely monitored.
Firmware exploitation: Vulnerabilities at the firmware level can grant attackers deep, persistent control over devices, often surviving reboots and configuration changes. These compromises are difficult to detect and can provide long-term access.
Footholds for lateral movement: Once compromised, attackers can use IoT devices to observe internal traffic, map network architecture, and reach more sensitive systems on the same network segment.
What Is the Business Impact of IoT Compromise?
The consequences of insecure IoT deployments extend beyond the devices themselves.
Operational Disruption
This can occur when compromised devices interfere with production systems, safety controls, or physical environments. In industrial and healthcare settings, these disruptions can affect availability and human safety.
Data Exposure
Data exposure is another concern. Many IoT devices collect sensitive operational or personal data that, if intercepted, can be used for surveillance, fraud, or future attacks.
Financial and regulatory impacts
These often follow as incident response costs, system remediation, and increased cyber insurance premiums create long-term financial pressure. Reputational damage compounds these effects, especially when incidents affect customer trust or service reliability.
How Do you Build Effective IoT Security?
Securing IoT environments requires integrating device awareness into broader security operations.
Discovery and Inventory
Organizations must be able to identify IoT devices as they connect to networks and understand their role and expected behavior.
Behavioral Baselining
When devices begin communicating in unexpected ways, such as reaching unknown external destinations or scanning internal systems, these deviations can indicate compromise. At scale, this requires advanced analytics.
Network Segmentation
This limits risk by isolating IoT devices from critical systems. Proper segmentation ensures that even if a device is compromised, attackers cannot easily move deeper into the environment.
Completing a defense-in-depth approach that acknowledges IoT constraints while reducing exposure also requires:
- Credential hygiene
- Firmware management
- Compensating controls for unsupported devices
How Arctic Wolf Helps
Arctic Wolf delivers security operations services, including managed detection and response, that extend visibility to IoT devices alongside endpoints, networks, cloud, and identity systems.
Through the Aurora™ Platform, Arctic Wolf monitors IoT-related traffic and behavior even when devices cannot support agents. Expert analysts provide 24×7 monitoring, investigation, and response, filtering noise and identifying genuine threats.
Through Arctic Wolf® Managed Risk and the Concierge Experience, Arctic Wolf helps organizations identify IoT exposure, prioritize remediation, and continuously improve security posture as environments evolve.
By operationalizing IoT security within a broader detection and response strategy, Arctic Wolf helps organizations End Cyber Risk®.
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