The Internet of Things is the concept of everyday physical objects gaining network connections so they can sense, report, and act.
The idea is about things becoming participants on a network, not about the catalog of weaknesses those products later show in the field.
How it works
A thermostat, a camera, a badge reader, a pump, or a vehicle can publish measurements and receive commands without a person sitting at a keyboard.
The value is automation and visibility, and the defining feature is a physical object with a network presence rather than a laptop or a phone alone.
This page stays with the concept, including how such objects change what a network contains and who depends on it.
The separate question of weak defaults, stale firmware, and exposed admin pages belongs to the device risk discussion, not to the definition of the idea.
Concrete examples
- A warehouse tracks pallets with small radios that report location to a local broker whenever a forklift passes a gate.
- An office building adjusts ventilation from occupancy sensors that publish readings every minute to a controller.
- A utility meter sends usage totals over a radio network so a truck no longer has to visit every house.
Protective measures
- Describe each connected object by what it senses or controls so the concept stays tied to a real function.
- Record which networks the objects join before you treat them as ordinary computers with screens and users.
- Ask which business process stops if the object cannot report, because that dependency is part of adopting the idea.
- Keep the conceptual inventory separate from the vulnerability backlog so planning does not collapse into a single undifferentiated list.
Related articles
The practical risk of weak and long lived connected devices is described in What is IoT device risk for connected products in production?.
Dividing a network so one zone cannot freely reach another is explained in What is network segmentation across separate trust zones?.
Protecting linked systems as a whole practice is covered in What is network security for systems that must stay connected?.