Enhancing DoS Attack Recovery in MQTT Brokers for IoT Systems through Efficient Scheduling Algorithms

The exponential rise in the use of IoT devices has produced a growing risk of Denial of Service (DoS) attacks on IoT infrastructure. DoS attacks can prevent critical services from reaching legitimate users by targeting communication protocols such as Message Queuing Telemetry Transport (MQTT). Prior research has touched on algorithms to detect DoS attacks on the MQTT protocol, but the discussion of broker recovery from DoS attacks is not prevalent in the literature. This paper proposes the use and adaptation of efficient scheduling algorithms for minimizing tardy processing time to enhance the on-time delivery of backed-up queries to MQTT brokers following DoS attacks.