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Oct 12 · Monday

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Found 59 papers

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  1. Space beats statistics, retraining beats ranking: auditing training labels under label-only backdoors

    Auditing training labels for label-only backdoors, comparing spaces and statistics, and judging by retraining

    Published
    Evaluated models
    ResNet-32
    AbstractLabel inspection must be done in a space that has not been fitted to these labels, and judged by retrained models rather than detection scores.

    The authors ask: can a defender without trusted data decide which training labels to keep, and how much clean data this destroys, and what the final model accuracy is.

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  2. AttacksarXiv 2610.12644

    Cancerous backdoor attack: progressive activation via invisible tokens and a stage controller.

    Proposes the Cancerous backdoor, which progressively corrupts reasoning using invisible stage tokens.

    Published
    Evaluated models
    Llama-3.1-8B-Instruct, Qwen2.5-7B-Instruct, Mistral-7B-Instruct-v0.3
    AbstractHidden tokens plus a stage controller make the backdoor progressively corrupt reasoning upon triggering, and the authors believe that looking only at the answer will miss it.

    Cancerous Backdoor Attack changes LLM backdoors from one-time activation to multi-stage reasoning corruption that accumulates progressively with triggers.

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  3. DefensesarXiv 2610.11634

    LTBD:用可学习信任边界分隔符防御提示注入

    提出 LTBD,用可学习分隔符隔离可信指令与不可信数据

    Published
    Evaluated models
    Llama3-8B-Instruct, Llama3.1-8B-Instruct, Falcon3-7B-Instruct and others4
    AbstractLTBD 只训练四个分隔符嵌入。

    LTBD 是一种不改基座权重的提示注入防御:只学习用来标出可信指令与不可信数据边界的四个 token 嵌入。

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  4. DefensesarXiv 2610.09941

    OrthoPurify 用一步正交投影净化被后门污染的视觉语言模型

    提出 OrthoPurify,用正交投影清除视觉语言模型适配器中的劫持方向

    Published
    Evaluated models
    LLaVA-1.5-7B, Qwen3-VL-8B, LLaVA-1.5-13B and others5
    Abstract一次投影去掉劫持方向。

    OrthoPurify 是部署前的 LVLM 后门净化方法,用一次正交投影去掉被劫持的权重更新方向。

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  5. AttacksarXiv 2610.05793

    研究者训练出按多智能体拓扑触发的代码后门模型

    提出拓扑条件后门,使代码模型在推断多智能体部署时植入漏洞

    Published
    Evaluated models
    Qwen2.5-7B-Instruct, Qwen2.5-Coder-7B-Instruct

    Abstract论文证实了拓扑条件后门的可训练性与泛化性,展示了常规评测盲区,并提出差异化拓扑审计作为检测防御方向。

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  6. AttacksarXiv 2610.05266

    论文披露主动式智能体的服务方间接提示注入攻击

    提出服务方间接提示注入,把主动智能体的决策协助转向预选目标

    Published
    Setting
    AI Agent
    Evaluated models
    GPT-5, Claude Opus 4.6, Gemini 3 Pro and others7
    Abstract提供者侧间接注入用 T–B–S 把主动协助转向外部目标,并在三环境中提高模拟用户授权。

    外部提供者只控制与自身目标关联的内容,就可以把良性主动个人智能体的协助转向该目标。

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  7. 研究揭示无触发投毒审计缺口:事实答对不等于决策正确

    揭示无触发虚假训练下事实回答与下游决策的审计差距

    Published
    Evaluated models
    Qwen2.5-0.5B, Qwen2.5-1.5B, Qwen2.5-3B and others9
    Abstract作者发现无触发词虚假训练下事实回答与下游决策存在脱节,直接审计与事实纠错均无法保证决策正确。

    论文是一项针对语言模型在无触发词虚假信息训练下行为表现的实证分析研究。

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  8. MADBench:多智能体辩论安全性评测基准发布

    提出 MADBench,评测多智能体辩论是吸收还是放大对抗影响

    Published
    Evaluated models
    gpt-4o, GPT-5, GPT-6 Astra
    AbstractMADBench 显示辩论能吸收部分准确率攻击,同时放大未授权读写。

    MADBench 是一个评测多智能体辩论安全性的基准,用来看攻击是被辩论吸收还是被放大。

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  9. DefensesarXiv 2609.38909

    Purdue 提出 Pact:将欺骗作为行为遗忘

    提出 PACT,遗忘推理模型在压力下的欺骗行为并保留上下文理解

    Published
    Attacker
    White-box
    Evaluated models
    DeepSeek-R1-Distill-Qwen-32B, QwQ-32B

    Abstract论文将大模型欺骗形式化为上下文条件行为,提出 PACT 框架在消除欺骗的同时保留了上下文遵循能力。

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  10. DefensesarXiv 2610.00348

    NEEDLE:通过权重正交化移除 LLM 后门

    提出 NEEDLE,用权重正交化在已知触发器时去除大模型后门

    Published
    Evaluated models
    Gemma-3-4B-IT, Qwen3-4B-Instruct-2507, Gemma-3-12B-IT

    AbstractNEEDLE 用闭式权重编辑去掉已知触发器的后门,并保住拒绝子空间。

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  11. AttacksarXiv 2609.38270

    VirusCascade:劫持 LLM 推荐智能体的协同反思机制

    提出 VirusCascade,联合操纵商品描述与交互轨迹以劫持推荐智能体协同反思

    Published
    Evaluated models
    AgentCF, AgentSEQ, AgentRAG and others4
    Abstract作者把反思写回视为推广攻击入口,并用联合操纵和诊断探针研究其持续与传播。

    VirusCascade 是针对推荐智能体协作反思的 black-box targeted promotion 攻击研究。 攻击者只改商品描述和少量账号的普通交互,试图让目标商品获得更多良性用户曝光。

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  12. arXiv 论文分析神经网络为何容易被植入后门

    分析投毒诱发的特征学习如何改变后门预算缩放

    Published
    Evaluated models
    quadratic neuron, network
    Abstract作者给出特征学习改变后门预算指数的可解机制,并以高斯采样实验检验。

    这是一项后门预算的理论分析,核心对象是最小二乘训练的二次神经元。作者关注:只依据冻结表示估算投毒成本,是否会误判具有特征学习能力的模型。

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  13. DefensesarXiv 2609.34804

    物理认证联邦学习:为关键水务基础设施的协同异常检测提供安全保障

    为协同异常检测提出物理准入门,在聚合前拦截不合规训练批次

    Published
    Evaluated models
    deep reconstruction autoencoder
    Abstract物理准入为联邦检测增加数据约束,但合规证明不等于无投毒或训练来源证明。

    这是一项面向水基础设施联邦异常检测的物理准入防御研究。 作者针对隐藏训练遥测带来的投毒检查问题,结合不变量挖掘、聚合前过滤和零知识抽样证明。

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  14. AttacksarXiv 2609.33569

    信息黑洞:3D 点云重建中的后门机制研究

    提出 Information Blackhole 与 AGM,控制点云自编码器后门重建到指定形状

    Published
    Evaluated models
    FoldingNet, PointDiffusion
    AbstractAGM 用自适应高斯匹配压制 PCAE 投毒潜码中的源几何,九组设置的 CD-ASD 均下降。

    这篇工作研究点云自编码器的训练时后门:干净输入仍自重建,带触发的输入应重建成攻击者指定形状。分类后门只需把预测推向离散标签。PCAE 把源几何与目标信息编进同一个连续潜空间,残留源几何会把重建拉回源形状。

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  15. AttacksarXiv 2609.27422

    RAMP:逆转对抗扰动以增强针对恶意软件检测器的干净标签后门攻击

    提出 RAMP,逆转对抗扰动加强恶意软件检测器的干净标签后门

    Published
    Evaluated models
    MalConv, MalConvGCG
    AbstractRAMP 用反转扰动做 clean-label 投毒。

    RAMP 是 score-based black-box 下的 clean-label 后门增强,对象是会微调的 Windows PE 原始字节恶意软件检测器。

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