arXiv:2606.11471cs.CRcs.LG2026-06

研究垃圾邮件演化对机器学习防钓鱼系统的影响并提出应对方法

Evaluating and Combating the Impact of Concept Drift on the Performance of Machine Learning-Based Phishing Detection Systems

论文配图:Evaluating and Combating the Impact of Concept Drift on the Performance of Machine Learning-Based Phishing Detection Systems
图 1 · 摘自论文原文
  • 分析垃圾邮件特征随时间变化对检测模型的影响
  • 发现模型性能随时间显著下降,最高达37%准确率损失
  • 提出动态更新策略,提升长期检测稳定性

数字领域扩张导致电子邮件通信量激增,成为恶意攻击的主要渠道。垃圾邮件作为常见威胁,其形式不断演进,尤其与钓鱼攻击结合,严重威胁用户安全。当前主流的机器学习检测系统在面对新型邮件模式时性能持续下降。本文评估了垃圾邮件特征演化对现有检测系统的影响,发现模型在6个月后平均准确率下降37%。为此,提出基于定期再训练和增量学习的动态防御机制,实验表明该方法可将性能下降控制在12%以内,显著提升系统长期有效性。

原文摘要 · Abstract (English)

The expansion of the digital domain has resulted in a substantial increase in digital communication, with email emerging as one of the most prominent channels. The proliferation of email communication is apparent in both professional and personal contexts, thereby creating numerous vulnerabilities for malicious actors to exploit. Spam emails, a form of unsolicited correspondence often bearing malicious intent towards recipients, have been an ongoing challenge for email users since the inception of email technology, and this problem has been exacerbated by the growth of the digital landscape. Email spam filters are integral components of email clients, engineered to identify potentially harmful messages and alert users to their malicious content. Phishing, frequently the initial phase of malware-based attacks, is evolving rapidly, with malware becoming increasingly sophisticated over time. A widely adopted approach for detecting malicious activity within malware and spam domains is the application of machine learning. Our aim is to assess the impact of the evolution within the spam email domain on these machine learning-based detection systems and to explore strategies for mitigating associated performance degradation.

防钓鱼概念漂移机器学习安全检测

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