互联网企业间的信息传递:黑客攻击的案例

Michael L. Ettredge, V. Richardson
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引用次数: 131

摘要

本研究的重点是股票市场对2000年2月针对某些知名互联网公司的拒绝服务攻击的反应。投资者似乎使用了几种启发式方法来判断哪些公司与被攻击的公司“相似”,从而预测它们也可能受到攻击。所采用的主要启发式似乎是依赖互联网进行经营活动的相似性(即一组互联网公司)。我们发现,在没有实际受到攻击(即信息传递)的互联网公司中,平均异常收益为负。这种情况既发生在一些公司受到攻击的互联网行业,也发生在没有受到攻击的互联网行业。第二个启发似乎是,规模与被攻击者相似的互联网公司(即相对较大的公司)更有可能受到攻击。与所有其他互联网行业相比,互联网安全产品和服务提供商的平均异常回报为正。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Information Transfer Among Internet Firms: The Case of Hacker Attacks
This study focuses on the stock market reaction to denial of service attacks against certain well‐known Internet firms in February 2000. Investors appear to have used several heuristics in deciding which firms were “similar” to those attacked, and thus predicted that they were also likely to be attacked. The primary heuristic employed appears to have been similarity in reliance on the Internet to conduct operating activities (i.e., the set of Internet firms). We find negative mean abnormal returns among Internet firms not actually attacked (i.e., information transfer). This occurred both within Internet industries in which some firms were attacked, and within Internet industries with no attacks. A secondary heuristic appears to have been that Internet firms similar in size to those attacked (i.e., relatively large) were more likely to be attacked. In contrast to all other Internet industries, providers of Internet security products and services experienced positive mean abnormal returns.
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