tailieunhanh - Defending Against an Internetbased Attack on the Physical World

Over the last several years, we have enjoyed several new Internet services that have dramatically improved our qual- ity of life. The most obvious examples of these are search engines, whose indices cover just about any information that is known in the world, and Web portals, which provide a window to the wealth of information and services available online. In this paper, we demonstrate that we have been living in a state of bliss, spoiled by the lack of any concerted attacks that utilize these new services, search engines in par- ticular. We demonstrate that the current Internet services o er an avenue of attack against physical world processes, and we argue. | Defending Against an Internet-based Attack on the Physical World Simon Byers AT T Labs - Research 180 Park Avenue Florham Park New Jersey byers@ Aviel D. Rubin Johns Hopkins University Information Security Institute Baltimore Maryland rubin@ David Kormann AT T Labs - Research 180 Park Avenue Florham Park New Jersey davek@ ABSTRACT We discuss the dangers that scalable Internet functionality may present to the real world focusing on a simple yet impactful attack that we believe may occur quite soon. We offer and critique various solutions to this class of attack and hope to provide a warning to the Internet community of what is currently possible. The attack is to some degree a consequence of the availability of private information on the Web and the increase in the amount of personal information that users must reveal to obtain Web services. Categories and Subject Descriptors H. 4 Information Systems Applications Miscellaneous General Terms Computer Security Internet Threats Automated attacks Keywords Comuter Security Internet Threats Cybercrime I. INTRODUCTION One of the things that makes attacks on Internet services more dangerous than attacks in the physical world is the automation that is possible in the world of computers. An example of this can be seen in the resistance of many to move elections online. The worry is that in the physical world attacks do not scale very well but as soon as a physical world process is moved online malicious parties can potentially exploit vulnerabilities in an automated and exhaustive fashion. All of the published studies related to online elections come to the same conclusion. Namely that the technology is not ready for Internet voting and that at this time the security risks are too great 6 14 13 9 . We believe that the risks of online services are not limited to electronic voting. Permission to make digital or hard copies of all or part of this work for personal or classroom use is .

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