A novel feature is a capability that is unusual or uncommon when introduced. It may be a new hardware component, software function, or way for a device to interact with its surroundings. Novelty depends on the technology and expectations of the time; a feature can later become routine.
In cyber security, new capabilities can create both useful defenses and unfamiliar risks. For example, a device with cameras, sensors, or wireless connections may support new security tools, but it may also expose data or interfaces that older systems did not have. Attackers can probe those capabilities for weaknesses, while defenders assess how they affect privacy, access control, and the system’s attack surface.