节点注入为特定类的网络中毒
Ansh Kumar Sharma1, Rahul Kukreja1, Mayank Kharbanda1
1Indraprastha Institute of Information Technology, Delhi, India.
概括
这项研究介绍了NICKI,这是一种针对类特定图形中毒攻击的新方法. 在图形神经网络 (GNN) 中,NICKI有效地错误地分类了目标节点,同时仍然无法检测到.
科学领域:
- 图形神经网络的神经网络
- 敌对的攻击 敌对的攻击
- 机器学习安全 机器学习安全
背景情况:
- 图形神经网络 (GNN) 擅长学习网络表示,但容易受到对抗性攻击.
- 节点注入攻击是实用的,不需要对现有网络结构进行操作.
- 现有的攻击缺乏具体性和隐蔽性,使得它们可以被检测到.
研究的目的:
- 提出一种针对GNN的新型类特定节点注入攻击.
- 开发一种方法 (NICKI) 用于将特定节点错误分类到不同的类别.
- 为了确保注入的节点被伪装为良性,保持图的完整性.
主要方法:
- 对于有针对性的GNN破坏,NICKI采用了基于优化的战略.
- 攻击分为两个阶段进行:学习节点表示和生成恶意节点特征/边缘.
- 在四个基准网络上进行了广泛的实验.
主要成果:
- 在错误分类目标节点方面,NICKI显著优于四种基线攻击策略.
- 注入的节点是有效的伪装,逃避基于拓性质的检测.
- 受毒的图形在拓上仍然无法与干净的图形区分.
结论:
- 尼基 (NICKI) 提出了一种针对GNN的有效和隐蔽的特定类对抗性攻击.
- 拟议的方法强调了GNN对复杂节点注入攻击的脆弱性.
- 需要进一步的研究来开发针对这种复杂的中毒策略的强有力的防御.
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