Tempest

Abstract: A previously unknown form of compromising emanations has been discovered. LED status indicators on data communication equipment, under certain conditions, are shown to carry a modulated optical signal that is significantly correlated with information being processed by the device. Physical access is not required; the attacker gains access to all data going through the device, including plaintext in the case of data encryption systems. Experiments show that it is possible to intercept data under realistic conditions at a considerable distance. Many different sorts of devices, including modems and Internet Protocol routers, were found to be vulnerable. A taxonomy of compromising optical emanations is developed, and design changes are described that will successfully block this kind of "Optical Tempest" attack.

Abstract: FOR MANY YEARS IDEALIST READINGS OF THE TEMPEST presented Prospero as an exemplar of timeless human values. They emphasized the way in which his hard-earned "magical" powers enable him to re-educate the shipwrecked Italians, to heal their civil war-and, even more important, to triumph over his own vengefulness by forgiving his enemies; they emphasized the way he achieves, if not a wholly "brave," at least a harmoniously reconciled new world. Within the last few years, however, numbers of critics have offered remarkably similar critiques of this reading. There is an essay on The Tempest in each of three recent anthologies of alternative, political, and reproduced Shakespeare criticism, and another in the volume on estranging Renaissance criticism; The Tempest was a focus for the 1988 SAA session on "Shakespeare and Colonialism" and was one of the masthead plays in the Folger Institute's 1988 seminar on new directions in Shakespeare studies. Together,

Abstract: Author's Note: During the week of the CEC Chicago Convention, a number of individuals involved in the newly formed Division on Educational Diagnosis and Programing decided that the urgency of the concerns facing CEC demanded that some of the issues be brought squarely before the membership for discussion and debate. Expression through the Forum department was suggested. The aim of the series is to engage the readers of Exceptional Children in thought and discussion. We urge, therefore, that you not only read this article, but respond to it. Responses are welcome in the form of articles for inclusion in the Forum series, or in a \"Letter to the Editor.\" This is an opportunity to share your views concerning the future of special education.

Abstract: Nearly half a century ago, military organizations introduced “Tempest” emission-security test standards to control information leakage from unintentional electromagnetic emanations of digital electronics. The nature of these emissions has changed with evolving technology; electromechanic devices have vanished and signal frequencies increased several orders of magnitude. Recently published eavesdropping attacks on modern flat-panel displays and cryptographic coprocessors demonstrate that the risk remains acute for applications with high protection requirements. The ultra-wideband signal processing technology needed for practical attacks finds already its way into consumer electronics. Current civilian RFI limits are entirely unsuited for emission security purposes. Only an openly available set of test standards based on published criteria will help civilian vendors and users to estimate and manage emission-security risks appropriately. This paper outlines a proposal and rationale for civilian electromagnetic emission-security limits. While the presented discussion aims specifically at far-field video eavesdropping in the VHF and UHF bands, the most easy to demonstrate risk, much of the presented approach for setting test limits could be adapted equally to address other RF emanation risks.