NDSS 2025 – Impact Tracing: Identifying The Culprit Of Misinformation In Encrypted Messaging Systems
好的，我现在需要帮用户总结一篇关于加密消息系统中识别虚假信息来源的文章。用户的要求是用中文总结，控制在100字以内，不需要特定的开头。
首先，我阅读了文章内容。文章主要讨论了加密消息系统如何阻碍内容审查，导致虚假信息传播。作者提出了一种新的方法，称为“影响追踪”，旨在追踪有影响力的传播者，同时保护非影响力用户的隐私。
接下来，我需要提取关键点：加密系统的问题、现有方法的不足、新方法的创新点以及其优势。然后将这些点浓缩成简短的句子，确保不超过100字。
最后，检查语言是否简洁明了，是否符合用户的要求。确保没有使用“这篇文章”或“文章内容总结”这样的开头。
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研究提出了一种新的“影响追踪”方法，用于在加密消息系统中追踪虚假信息的关键传播者，同时保护非影响力用户的隐私。该方案通过添加噪声隐藏非影响力用户，并确保对关键传播者的有效识别。
2025-12-31 16:0:0
Author: securityboulevard.com(查看原文)
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Session 7C: Secure Protocols
Authors, Creators & Presenters: Zhongming Wang (Chongqing University), Tao Xiang (Chongqing University), Xiaoguo Li (Chongqing University), Biwen Chen (Chongqing University), Guomin Yang (Singapore Management University), Chuan Ma (Chongqing University), Robert H. Deng (Singapore Management University)
PAPER
Impact Tracing: Identifying the Culprit of Misinformation in Encrypted Messaging Systems
Encrypted messaging systems obstruct content moderation, although they provide end-to-end security. As a result, misinformation proliferates in these systems, thereby exacerbating online hate and harassment. The paradigm of “Reporting-then-Tracing” shows great potential in mitigating the spread of misinformation. For instance, (message traceback) (CCS’19) traces all the dissemination paths of a message, while (source tracing) (CCS’21) traces its originator. However, message traceback lacks privacy preservation for non-influential users (e.g., users who only receive the message once), while source tracing maintains privacy but only provides limited traceability. In this paper, we initiate the study of (impact tracing). Intuitively, impact tracing traces influential spreaders central to disseminating misinformation while providing privacy protection for non-influential users. We introduce noises to hide non-influential users and demonstrate that these noises do not hinder the identification of influential spreaders. Then, we formally prove our scheme’s security and show it achieves differential privacy protection for non-influential users.
ABOUT NDSS
The Network and Distributed System Security Symposium (NDSS) fosters information exchange among researchers and practitioners of network and distributed system security. The target audience includes those interested in practical aspects of network and distributed system security, with a focus on actual system design and implementation. A major goal is to encourage and enable the Internet community to apply, deploy, and advance the state of available security technologies.
