信息网络安全 ›› 2026, Vol. 26 ›› Issue (9): 1341-1353.doi: 10.3969/j.issn.1671-1122.2026.09.002
聂豪杰1,2, 孙德刚1,2, 潘兴博1,2, 万巍1,2, 龙春1,2(
)
收稿日期:2026-05-06
出版日期:2026-09-10
发布日期:2026-09-30
通讯作者:
龙春
E-mail:anquanip@cnic.cn
作者简介:聂豪杰(2002—),男,河南,硕士研究生,主要研究方向为大模型安全、隐私计算|孙德刚(1970—),男,吉林,正高级工程师,博士,主要研究方向为高安全等级系统防护技术、网络空间安全|潘兴博(1990—),男,河北,副研究员,博士,主要研究方向为量子保密通信、量子同态加密、数据安全|万巍(1982—),男,湖北,高级工程师,博士,主要研究方向为网络空间安全|龙春(1979—),男,湖北,正高级工程师,博士,CCF会员,主要研究方向为人工智能、攻击检测、恶意域名检测、网络流量分析
基金资助:
Nie Haojie1,2, Sun Degang1,2, Pan Xingbo1,2, Wan Wei1,2, Long Chun1,2(
)
Received:2026-05-06
Online:2026-09-10
Published:2026-09-30
Contact:
Long Chun
E-mail:anquanip@cnic.cn
摘要:
为应对大语言模型带来的隐私泄露、版权争议和数据透明性问题,文章系统综述成员推理攻击与防御技术。以大模型生命周期和系统组件为双主线:首先,说明成员推理的形式化定义与威胁模型,并阐述其由过拟合向局部与条件记忆演化的理论基础,明确相较于已有通用成员推理综述的研究增量;然后,梳理预训练、微调、对齐、黑盒应用程序接口(API)、多模态和检索增强生成(RAG)等场景中的攻击,重点补充 LiRA、MoPe、ReCaLL 以及多类 RAG 攻击;进一步对 WikiMIA、MIMIR 等基准的代表性结果进行定量对照,指出时间切分造成的分布偏差会显著高估攻击能力;最后,从数据治理、正则化与差分隐私、知识蒸馏、解码过滤和机器遗忘5个层面构建纵深防御体系。分析结果表明,攻击信号已由全局统计转向逐样本校准、局部记忆峰、条件变化和系统知识覆盖,而严格同分布、低误报率评价仍是制约实用审计的核心问题。
中图分类号:
聂豪杰, 孙德刚, 潘兴博, 万巍, 龙春. 面向大语言模型的成员推理攻击与防御技术综述[J]. 信息网络安全, 2026, 26(9): 1341-1353.
Nie Haojie, Sun Degang, Pan Xingbo, Wan Wei, Long Chun. A survey of membership inference attacks and defenses for large language models[J]. Netinfo Security, 2026, 26(9): 1341-1353.
表2
LLM主流MIA方法对比
| 阶段/场景 | 代表方法 | 访问 | 核心信号 | 关键依赖与局限 |
|---|---|---|---|---|
| 预训练 | PPL/Zlib[ | 灰盒 | 全局可预测性 | 混淆样本难度 |
| 预训练 | LiRA/校准[ | 黑/灰盒 | 逐样本似然比 | 影子模型或 校准集昂贵 |
| 预训练 | Min-K%/Min-K%++[ | 灰盒 | 低概率token与局部模态 | 需要token概率 |
| 预训练 | MoPe/ReCaLL[ | 灰盒 | 参数扰动/条件似然变化 | 多次推理或 上下文敏感 |
| 数据集级 | Dataset Inference[ | 灰盒 | 多样本统计 聚合 | 要求候选集合 |
| 微调 | SPV/Neighbour/DF-MIA[ | 灰盒 | 自校准与 邻域差异 | 改写质量影响 结果 |
| 微调前沿 | WBC[ | 灰盒 | 多尺度局部 窗口 | — |
| 对齐 | PREMIA[ | 灰盒 | 偏好损失 | — |
| 黑盒API | PETAL/SaMIA[ | 黑盒 | 语义近似/采样伪似然 | 查询成本高 |
| 多模态 | CLIP/VLLM/Self-Comparison[ | 灰/黑盒 | 跨模态匹配与集合内参照 | 成员单位需明确 |
| RAG | RAG-MIA/GIB/RAG-leaks/MBA[ | 黑盒 | 检索触发、 生成依赖、 掩码恢复 | 受检索召回和常识影响 |
| RAG前沿 | Riddle/E-MIA[ | 黑盒 | 隐蔽题目/ 事实考试 | 预印本需复核 |
表3
代表性方法在WikiMIA、MIMIR及RAG基准上的定量结果
| 基准/协议 | 模型与设置 | 方法 | ROC-AUC | 低FPR结果 |
|---|---|---|---|---|
| WikiMIA,32 token | 6类模型平均 | Min-K%++[ | 0.753 | TPR@1%FPR=6.6% |
| WikiMIA,32 token | 6类模型平均 | ReCaLL[ | 0.901 | TPR@1%FPR=17.5% |
| WikiMIA,64 token | 6类模型平均 | Min-K%++[ | 0.759 | TPR@1%FPR=10.6% |
| WikiMIA,64 token | 6类模型平均 | ReCaLL[ | 0.913 | TPR@1%FPR=15.4% |
| WikiMIA,128 token | 6类模型平均 | Min-K%++[ | 0.752 | TPR@1%FPR=3.2% |
| WikiMIA,128 token | 6类模型平均 | ReCaLL[ | 0.900 | TPR@1%FPR=16.9% |
| MIMIR,13-gram, 七域宏平均 | Pythia-12B | Min-K%[ | 0.559 | TPR@1%FPR=4.0% |
| MIMIR,13-gram, 七域宏平均 | Pythia-12B | Min-K%++[ | 0.585 | TPR@1%FPR=4.3% |
| MIMIR,13-gram, 七域宏平均 | Pythia-12B | ReCaLL[ | 0.565 | TPR@1%FPR=4.4% |
| Pile,单方法设置 | Pythia-160M | MoPe[ | 0.646 | TPR@5%FPR=4.9% |
| RAG,Health-CareMagic/MS-MARCO/NQ | GPT-4o-mini+BGE | MBA[ | 0.880/ 0.860/ 0.900 | 成员为检索库文档 |
表4
大模型成员推理防御机制比较
| 防御类别 | 适用阶段 | 代表机制 | 隐私保证 | 主要代价 | 局限 |
|---|---|---|---|---|---|
| 去重与 数据治理 | 训练前 | 多粒度去重、PII清洗、数据血缘[ | 经验 | 索引与 误删 | 不消除单次罕见记忆 |
| 正则化 | 训练中 | 早停、dropout、标签平滑、对抗正则[ | 经验 | 低至中 | 依赖已知 攻击 |
| 差分隐私 | 训练/ 微调 | DP-SGD、DP-Forward[ | 形式化 | 效用与 算力 | 预算选择 困难 |
| 知识蒸馏 | 训练后 | 知识迁移、 交叉蒸馏[ | 通常经验 | 教师推理与学生 训练 | 教师输出仍可泄露 |
| 输出扰动/过滤 | 部署 | MemGuard、相似 片段过滤[ | 经验 | 延迟与 误拒 | 不移除参数记忆 |
| 查询控制/拒答 | 部署 | MIA-Tuner、速率限制、日志[ | 经验 | 可用性 | 提示改写可绕过 |
| 机器遗忘 | 退出 | 去记忆化、知识遗忘、双用途训练[ | 方法相关 | 再训练与能力损失 | 拒答不等于遗忘 |
| RAG访问控制 | 检索/ 生成 | 权限过滤、最小返回、索引审计[ | 系统 | 召回与 答案质量 | 侧信道仍 存在 |
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