Chaotic tumbleweed optimization algorithm with stacked deep learning based cyberattack detection in industrial CPS environment

Abstract

Cyberattacks on cyber-physical systems (CPS) have led to severe concerns, and then it is most significant to identify the attacks in the initial phase. But, there are major problems that are resolved in this area; it contains the capability of the security method for detecting earlier unknown attacks. These challenges are resolved with system behaviour analysis manners and semi-supervised or unsupervised machine learning (ML) approaches. The efficacy of the attack recognition method is strongly dependent upon the databases utilized for training the ML approaches. Anomaly detection is the procedure of recognizing anomalous procedures, which could not equal the predictable system behaviour. It permits the recognition of novel and secret attacks. Presently, anomaly detection systems are frequently executed utilizing ML like shallow (or traditional) learning and deep learning (DL). This article develops a Chaotic Tumbleweed Optimization Algorithm with Stacked Deep Learning based Cyberattack Detection (CTOASDL-CD) approach in the Industrial CPS platform. The CTOASDL-CD technique intends to exploit the FS with an optimal hyperparameter-tuned DL model for the detection of cyberattacks. To resolve the high dimensionality issue, the CTOASDL-CD technique uses CTOA for feature selection (FS) purposes. Besides, the stacked deep belief network (SDBN) model can be utilized for the recognition of cyberattacks. Finally, the tunicate swarm algorithm (TSA) has been deployed for the capable selection of hyperparameter values of the SDBN approach. To determine the improved performance of the CTOASDL-CD approach, a wide-ranging simulation value was performed. The experimental values demonstrated the capable outcome of the CTOASDL-CD methodology in accomplishing security in the industrial CPS environment.