Enhancing IoT Security with CNN and LSTM-Based Intrusion Detection Systems

TL;DR

This paper presents a CNN-LSTM based intrusion detection system for IoT security, achieving high accuracy and low loss on new and existing datasets, effectively identifying malicious traffic.

Contribution

The paper introduces a novel CNN-LSTM hybrid model for IoT intrusion detection, utilizing the CICIoT2023 dataset for training and CICIDS2017 for validation, demonstrating improved detection performance.

Findings

Achieved 98.42% accuracy in detecting IoT threats.

Reduced false positive rate to 9.17%.

Validated effectiveness on multiple datasets.

Abstract

Protecting Internet of things (IoT) devices against cyber attacks is imperative owing to inherent security vulnerabilities. These vulnerabilities can include a spectrum of sophisticated attacks that pose significant damage to both individuals and organizations. Employing robust security measures like intrusion detection systems (IDSs) is essential to solve these problems and protect IoT systems from such attacks. In this context, our proposed IDS model consists on a combination of convolutional neural network (CNN) and long short-term memory (LSTM) deep learning (DL) models. This fusion facilitates the detection and classification of IoT traffic into binary categories, benign and malicious activities by leveraging the spatial feature extraction capabilities of CNN for pattern recognition and the sequential memory retention of LSTM for discerning complex temporal dependencies in achieving enhanced accuracy and efficiency. In assessing the performance of our proposed model, the authors employed the new CICIoT2023 dataset for both training and final testing, while further validating the model's performance through a conclusive testing phase utilizing the CICIDS2017 dataset. Our proposed model achieves an accuracy rate of 98.42%, accompanied by a minimal loss of 0.0275. False positive rate(FPR) is equally important, reaching 9.17% with an F1-score of 98.57%. These results demonstrate the effectiveness of our proposed CNN-LSTM IDS model in fortifying IoT environments against potential cyber threats.