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Oct 12 · Monday

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  1. AttacksarXiv 2610.01365

    ReGap:无需真实隐私数据即可通过微调重新提取模型隐私关联

    提出 ReGap,用自生成伪监督微调恢复模型中的隐私关联

    Published
    Evaluated models
    GPT-2 Small, GPT-2 Medium, GPT-2 Large and others6

    Abstract提出无真实私有监督的恢复攻击 ReGap,实验显示微调可通过自生成数据唤醒模型潜在隐私关联,突显后适应隐私风险。

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  2. AttacksarXiv 2609.33985

    研究:众包微调数据投毒可放大专有指令抽取

    提出主题锚点投毒,放大众包微调后的专有指令提取

    Published
    Attacker
    Black-box
    Evaluated models
    Qwen2.5-7B-Instruct, Qwen2.5-14B-Instruct, Llama-3.1-8B-Instruct and others4

    Abstract论文提出基于主题锚点的数据中毒攻击,证明低比例的中毒样本可在黑盒条件下隐蔽放大微调指令泄漏。

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  3. AttacksarXiv 2609.14649

    CIG-MIA:利用上下文信息增益对 RAG 系统发起成员推断攻击

    提出 CIG-MIA,用上下文信息增益推断 RAG 知识库成员身份

    Published
    Evaluated models
    Llama-3.1-8B-Instruct, Mistral-7B-Instruct-v0.3, Llama-2-13b-chat-hf and others6
    AbstractCIG-MIA 用注入前后的答案似然差推断 RAG 库成员,灰盒可分性高于所列基线。

    CIG-MIA 是针对 RAG 外部知识库的成员推断攻击,同时覆盖灰盒和纯文本黑盒。

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  4. DefensesarXiv 2609.04767

    SHAQ:用影子查询实现向量数据库中的隐私检索

    提出 SHAQ,用影子查询嵌入替换文档嵌入以抵御嵌入反演

    Published
    Attacker
    Black-box
    Evaluated models
    GTR-T5 encoder, DPR
    AbstractSHAQ 用影子查询嵌入替换文档嵌入。

    SHAQ 是面向云端向量库 EIA 的防御:不直接改文档嵌入,而用影子查询嵌入替换它们。

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  5. DefensesarXiv 2605.19847

    论文揭示多租户 RAG 账号合谋使隐私泄露随账号数线性增长

    提出零知识审计协议,核验多租户 RAG 的合谋差分隐私

    Published
    Abstract揭示多租户 RAG 合谋泄露按根号 k 放大,提出带零知识证明的无泄露审计协议。

    论文针对多租户 RAG 服务在多账户协同攻击下隐私边界失效的问题展开研究。

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