Muriel Médard, Professor in Electrical Engineering and Computer Science at MIT, Public Presentation
Muriel Médard (MIT)
Monday, August 24th 2015 4pm, UCD, Science South S1.67
Muriel Médard is the Cecil H. Green Professor in the Electrical Engineering and Computer Science Department at MIT and leads the Network Coding and Reliably Communications Group at the Research Laboratory for Electronics at MIT.
Professor Médard will give a talk entitled 'Some Recent Applications of Information Theory to Surveillance, Security, and Privacy'. This talk will be aimed at a broad scientific audience, and all are warmly encouraged to attend.
Abstract: We survey several applications of information theory in topics of surveillance, security and privacy. In the first two areas, we first consider the use of random linear network coding to allow pseudonymous data distribution. The same technique can be applied to speed up downloads over multiple clouds, as well as to provide security, afforded by the use of random linear network coding to store data in a distributed fashion over individually untrusted networks. The problem of gaining access to data then becomes that of accessing a sufficient number of clouds to reconstruct data, which may entail guessing several passwords. We present new results in the area of password guessing, both over multiple clouds and in wireless settings, that lead to some unexpected results. We show that security questions, which are often used as an alternate attack to onerous password guessing attacks, can be designed to present a low probability of correct guessing based on publicly available information. Using related techniques, we envisage the problem of privacy, wherein public data can be used to infer personal information. We show that we may obtain privacy guarantees, in terms of lower bounds on probability of error for computing certain functions.
(Talk flyer below)