International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 187 - Number 15 |
Year of Publication: 2025 |
Authors: R. Saranya, S.L. Jayalakshmi |
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R. Saranya, S.L. Jayalakshmi . Generative AI-based Intrusion Detection of Imbalanced Network Traffic using Generative Adversarial Variational Auto-Encoder. International Journal of Computer Applications. 187, 15 ( Jun 2025), 9-18. DOI=10.5120/ijca2025925152
Knowledge of system security becomes more and more important as ever-evolving network threats arise. Intrusion detection, a crucial component of cybersecurity, recognizes unusual activity based on traffic patterns. However, harmful cyberattacks can frequently hide enormous amounts of legitimate data in unbalanced network traffic. Generative AI models can be utilized to address this imbalance by generating synthetic data that can improve the development of machine learning models. Traditional intrusion detection systems (IDS) often struggle with imbalanced data, where benign traffic overwhelmingly outnumbers malicious traffic. This imbalance can lead to poor detection rates for rare but significant attacks. To overcome this challenge, a novel approach is proposed using a Generative Adversarial Variational Auto-Encoder (GAVAE) to improve the detection of intrusions in imbalanced network traffic. By combining the probabilistic latent space learning of Variational Auto-Encoders (VAEs) with the adversarial training framework of Generative Adversarial Networks (GANs), the proposed method generates high-quality synthetic samples of minority classes. These synthetic samples augment the training dataset, leading to a more balanced distribution and increased throughput of the intrusion detection model. The proposed model was evaluated on the UNSW-NB15 and NSL-KDD data sets. The experimental results demonstrate that the proposed GAVAE model significantly improves the detection capabilities compared to traditional methods, offering a robust solution for network security.