What is IoT Security?
IoT Security is the practice of protecting Internet of Things devices, their firmware, and their network communications from unauthorized access, tampering, and exploitation. It covers both enterprise IoT devices and industrial IoT deployments.
What it does
IoT Security tools protect connected devices that typically lack built-in security controls. They work across the device lifecycle, from pre-deployment testing to runtime monitoring. Common capabilities include:
- Network traffic analysis: Inspecting device communications to detect anomalies without installing agents on the device itself.
- Firmware analysis: Scanning device firmware for known vulnerabilities, hardcoded credentials, and insecure configurations before deployment.
- Runtime integrity verification: Checking that device software has not been modified while the device is running.
- Protocol fuzzing: Sending malformed inputs to device interfaces to find weaknesses in how devices handle unexpected data.
- SBOM extraction: Identifying all software components inside a device so teams can track vulnerabilities in third-party libraries.
- Asset discovery: Building an inventory of every connected device on the network, including unmanaged and legacy devices.
Many tools in this category are agentless. They analyze out-of-band traffic or use passive network monitoring because most IoT devices cannot run security software.
Why teams buy it
IoT devices are common targets. They often run outdated operating systems, use default credentials, and receive infrequent patches. A compromised device can serve as a pivot point into broader enterprise or OT networks.
Regulated industries face additional pressure. Payment terminals, EV charging stations, and industrial sensors all carry compliance requirements that demand documented security controls.
Teams also buy IoT Security tools to gain basic visibility. Many organizations do not know how many IoT devices are on their networks or what those devices are doing.