Real-Time Operating System (RTOS)
A real-time operating system (RTOS) a type of OS that prioritizes deterministic execution of operations to ensure consistent response for time-critical tasks.
- designed for use in applications that require real-time processing and response
- purpose-specific operating systems designed for high levels of stability and processing speed
Example
The VxWorks operating system is commonly used in aerospace and defense systems.
- provides real-time performance and reliability
- well suited for use in aircraft control systems, missile guidance systems, and other critical defense systems
FreeRTOS is an open-source operating system used in many embedded systems, such as robotics, industrial automation, and consumer electronics.
AUTOSAR (Automotive Open System Architecture) standard defines a framework for developing automotive software.
- used in engine control, transmission control, and active safety systems applications
Medical devices, RTOS is used for applications such as:
- patient monitoring systems
- medical imaging
- and automated drug delivery systems
Industrial control systems, RTOS is used for process control and factory automation applications.
- Siemens SIMATIC WinCC Open Architecture system uses an RTOS to provide
- real-time performance
- and reliability for industrial automation applications
Risks
- RTOS software can be complex and difficult to secure
- challenging to identify and address vulnerabilities
- potential for system-level attacks
- attacker who gains access to an RTOS-based system could
- disrupt critical processes
- or gain control over the system it is designed to control
- security breach could result in harm to people or damage to equipment