研究定位 LLaMA-2-7B-Chat 安全敏感参数
定位安全敏感参数并稀疏改动权重以削弱安全对齐
- arXiv
- 2610.09000
- Published
- Layer
- Model layer
- Setting
- Models and APIs
- Evaluated models
- LLaMA-2-7B-Chat
- AttacksModel tampering
- RiskInappropriate refusal
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TRACE：仅凭 checkpoint 更新审计大语言模型有害目标
提出 TRACE，仅凭检查点更新审计有害合规微调目标
- arXiv
- 2610.07518
- Published
- Setting
- Models and APIs
- Evaluated models
- Llama-3.1-8B-Instruct, Mistral-7B-Instruct-v0.3, Qwen3-8B and others6
- AttacksModel tampering
- ComponentFine-tuning and open weights
Abstract作者称有害合规 SFT 在检查点更新中留下可排序坐标，并据此做只读权重审计。
作者在检查点更新里寻找有害合规 SFT 的目标组成，并把读数做成不查询模型、不看未知训练数据的审计分 TRACE。
LLM Forensics：用稀疏自编码器定位并控制后门触发机制
用 SAE 定位后门触发机制并分离检测与因果控制
- arXiv
- 2609.07746
- Published
- Layer
- Model layer
- Setting
- Models and APIs
- Evaluated models
- Gaperon-1B, Gaperon-8B, Gaperon-24B
- AttacksPoisoning and backdoors
AbstractGaperon 语言切换后门可分成检测、残差路由和后期语言跟踪三类 SAE 特征，只有部分能改行为。
作者用稀疏自编码器分解 Gaperon 中无害的语言切换后门，区分识别触发的特征与真正能抑制或诱发该行为的特征。固定触发使英语提示在 Gaperon-1B 与 8B 上续写成法语或德语。
论文提出拒答的几何解释：事后安全训练脆弱，预训练期持续安全共训更抗攻击
解释后验安全的权重几何脆弱性，并提出预训练持续安全共训练
- arXiv
- 2609.06934
- Published
- Layer
- Model layer
- Setting
- Models and APIs
- Evaluated models
- Qwen-2.5-7B, Qwen-2.5-7B-Instruct, Llama-3-8B and others15
- DefensesModel hardening
- AttacksModel tampering
- RiskInappropriate refusal
- ComponentFine-tuning and open weights
Abstract论文将后验安全脆弱性归因于正交抑制，并提出通过预训练持续共训练实现具备微调抗性的安全防护。
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