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PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Ibis: An Overlay Mix Network for Microblogging 
DTSTART:20150420T161500
DTEND:20150420T173000
DTSTAMP:20260414T103511Z
UID:3405666f0a5e5fa9eeee94bd7ab473e4ec8bf39908a2b23dc4c8370c
CATEGORIES:Conferences - Seminars
DESCRIPTION:By : Prof Ian Goldberg\, University of WaterlooAbstract :\nMic
 roblogging services such as Twitter are extremely popular.\nWhile they are
  commonly used by people who wish to reveal their names and friends to the
  world\, some users\, such as activists on the ground\, may wish to be abl
 e to post without automatically revealing their identities or locations. 
  An obvious approach is to use a low-latency anonymity system\, such as To
 r.  However\, low-latency systems fall prey to end-to-end timing attacks 
 easily accomplished by an ISP or a government monitoring clients while als
 o watching for posts to appear in real time on the microblogging site.\nWe
  present Ibis\, a high-latency mix network designed specifically for micro
 blogging.  Ibis is an overlay network: the mix nodes can be microblogging
  clients that come online only sporadicly\, and the intermediate encrypted
  messages are themselves posted as microblogged entries.  We accomplish t
 his through a novel cryptographic mix message format that uses only 47 byt
 es of overhead\, while maintaining three-hop\, 128-bit security against of
 fline attack.\nThis is joint work with Paul Hendry.Bio :\nIan Goldberg is 
 an Associate Professor of Computer Science and a University Research Chair
  at the University of Waterloo\, where he is a founding member of the Cryp
 tography\, Security\, and Privacy (CrySP) research group.  His research f
 ocuses on developing usable and useful technologies to help Internet users
  maintain their security and privacy.\nHe is a Senior Member of the ACM an
 d a winner of the Electronic Frontier Foundation's Pioneer Award.  He is 
 currently on sabbatical at KU Leuven in Belgium.More information
LOCATION:BC 420 https://plan.epfl.ch/?room==BC%20420
STATUS:CONFIRMED
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