ITR/SI: Guarding the Next Internet Frontier: Countering Denial of Information

随着互联网所支持的应用程序变得信息丰富，在存在潜在恶意实体的情况下确保获得高质量信息将是一项重大挑战。该研究项目的目标是开发防御技术来对抗拒绝信息（DoI）攻击。这种攻击试图通过故意引入看起来是有用信息的噪声来混淆信息系统。如果用户必须在对手为了隐藏关键信息而制造的噪音中找到一根针，那么仅仅提供信息是不够的。该研究的重点是在DoI攻击的存在下相关的信息质量指标的表征。特别是，两个互补的指标进行了探讨。信息规律性是指信息创建和获取模式的可预测性。第二个度量标准是信息质量信任度，它反映了信息源满足其客户需求的已知能力。技术的发展，以获得这些指标的信息源的值是研究的一个关键目标。 其他计划中的研究活动包括建立分布式信息基础设施和对DoI攻击的防御技术进行实验评估。

As applications enabled by the Internet become information rich, ensuring access to quality information in the presence of potentially malicious entities will be a major challenge. The goal of this research project is to develop defensive techniques to counter denial-of-information (DoI) attacks. Such attacks attempt to confuse an information system by deliberately introducing noise that appears to be useful information. The mere availability of information is insufficient if the user must find a needle in a haystack of noise that is created by an adversary to hide critical information. The research focuses on the characterization of information quality metrics that are relevant in the presence of DoI attacks. In particular, two complementary metrics are explored. Information regularity captures predictability in the patterns of information creation and access. The second metric, information quality trust, captures the known ability of an information source to meet the needs of its clients. The development of techniques to derive the values of these metrics for information sources is a key goal of the research. Other planned research activities include the building of a distributed information infrastructure and experimental evaluation of defensive techniques against DoI attacks.