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Sql injection detection algorithm based on Bi-LSTM and integrated feature selection

delete2025-03-12
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PRE
AI
Q
Qiurong Qin
Y
Yueqin Li *
Y
Yajie Mi
K
Kexin Wu
Z
Zhenzhao Wang
DOI:10.1007/s11227-025-07109-wdelete
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摘要

摘要

En 中文
SQL注入攻击构成了重大的网络安全威胁。然而,由于其多样性和变异性,现有检测方法往往存在高误报率和低准确率的问题。为解决这些挑战,本文提出了一种基于双向长短时记忆网络的高效轻量级SQL注入检测模型SQLLS。首先,采用词频-逆文档频率算法将SQL语句转换为数值特征向量,以提取关键信息并增强模型对输入数据的表征能力。随后,提出了一种集成特征选择方法GFC,该方法结合多种技术以提升特征选择的准确性和鲁棒性。具体而言,使用梯度提升回归树评估各特征的重要性,识别对分类最显著的特征;Fisher分数基于统计显著性筛选能有效区分SQL注入与非注入的特征;卡方检验进一步评估特征与目标标签的相关性,确保所选特征与SQL注入检测高度相关。特征选择后,采用混合精度训练技术以降低内存消耗并提升训练效率。为降低双向长短时记忆模型的复杂度并提高其计算效率,本文引入一种剪枝技术,通过移除不重要权重连接来最小化计算开销,从而提升模型的运行效率。实验结果表明,SQLLS模型实现了100%的准确率、0.154%的低误报率,且运行时间显著短于现有模型。
Keyword:
SQL injection
TF-IDF algorithm
Integrated feature selection
Bi-LSTM network

期刊

Journal of Supercomputing 封面图
Journal of Supercomputing
IF:
2.7
论文数:
1.2K
被引数:
1.0W

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