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At IRIS, a broad range of research topics in security, privacy,
and systems are being explored. Currently, we are focusing
on passive attacks against anonymous communications systems.
Anonymity provides a powerful form of privacy by which a
communicating user hides her identity within a large group
of users. Passive attacks against these systems can be very
dangerous, as they may be very difficult to detect while
being quite effective at exposing the users' identities.
We study both the nature and cost of the attacks, as well
as studying defenses that make such attacks more difficult
to perform. We are also investigating privacy and security
applications for incentives and reputation, privacy controls
for pervasive networks, identity escrow, and privacy controls
for data mining.
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