Realtime Robust Malicious Traffic Detection via Frequency Domain Analysis

• URL: http://arxiv.org/abs/2106.14707v1
• Date: Mon, 28 Jun 2021 13:38:05 GMT
• Title: Realtime Robust Malicious Traffic Detection via Frequency Domain Analysis
• Authors: Chuanpu Fu, Qi Li, Meng Shen, Ke Xu
• Abstract summary: We propose Whisper, a realtime ML based malicious traffic detection system that achieves both high accuracy and high throughput. Our experiments with 42 types of attacks demonstrate that Whisper can accurately detect various sophisticated and stealthy attacks, achieving at most 18.36% improvement. Even under various evasion attacks, Whisper is still able to maintain around 90% detection accuracy.
• Score: 14.211671196458477
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Machine learning (ML) based malicious traffic detection is an emerging security paradigm, particularly for zero-day attack detection, which is complementary to existing rule based detection. However, the existing ML based detection has low detection accuracy and low throughput incurred by inefficient traffic features extraction. Thus, they cannot detect attacks in realtime especially in high throughput networks. Particularly, these detection systems similar to the existing rule based detection can be easily evaded by sophisticated attacks. To this end, we propose Whisper, a realtime ML based malicious traffic detection system that achieves both high accuracy and high throughput by utilizing frequency domain features. It utilizes sequential features represented by the frequency domain features to achieve bounded information loss, which ensures high detection accuracy, and meanwhile constrains the scale of features to achieve high detection throughput. Particularly, attackers cannot easily interfere with the frequency domain features and thus Whisper is robust against various evasion attacks. Our experiments with 42 types of attacks demonstrate that, compared with the state-of-theart systems, Whisper can accurately detect various sophisticated and stealthy attacks, achieving at most 18.36% improvement, while achieving two orders of magnitude throughput. Even under various evasion attacks, Whisper is still able to maintain around 90% detection accuracy.

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