[IP] New paper on poisioning and pollution of P2P networks
------ Forwarded Message
From: Joseph Lorenzo Hall <joehall@xxxxxxxxx>
Reply-To: <joehall@xxxxxxxxx>
Date: Wed, 23 Feb 2005 23:20:22 -0800
To: Dave Farber <dave@xxxxxxxxxx>, Declan McCullagh <declan@xxxxxxxx>
Subject: New paper on poisioning and pollution of P2P networks
Hi Dave, Declan... I thought you two might enjoy this paper. -Joe
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## New paper on poisioning and pollution of P2P networks ##
http://groups.sims.berkeley.edu/pam-p2p/index.php?p=40
[Nicolas Christin][1] has just put the finishing touches on a new
paper authored with [Andreas Weigend][2] and SIMS professor [John
Chuang][3], ["Content Availability, Pollution and Poisoning in File
Sharing Peer-to-Peer Networks"][4] that will be presented at [ACM's
Conference on Electronic Commerce][5] this summer in Vancouver,
Canada. Here is the abstract:
[1]: http://www.sims.berkeley.edu/~christin/
[2]: http://www.weigend.com/
[3]: http://www.sims.berkeley.edu/~chuang/
[4]: http://p2pecon.berkeley.edu/pub/CWC-EC05.pdf
[5]: http://www.acm.org/sigs/sigecom/ec05/
> Copyright holders have been investigating technological solutions to
prevent distribution of copyrighted materials in peer-to-peer file
sharing networks. A particularly popular technique consists in
poisoning a specific item (movie, song, or software title) by
injecting a massive number of decoys into the peer-to-peer network,
to reduce the availability of the targeted item. In addition to
poisoning, pollution, that is, the accidental injection of unusable
copies of files in the network, also decreases content
availability. In this paper, we attempt to provide a first step
toward understanding the differences between pollution and
poisoning, and their respective impact on content availability in
peer-to-peer file sharing networks. To that effect, we conduct a
measurement study of content availability in the four most popular
peer-to-peer file sharing networks, in the absence of poisoning, and
then simulate different poisoning strategies on the measured data to
evaluate their potential impact. We exhibit a strong correlation
between content availability and topological properties of the
underlying peer-to-peer network, and show that the injection of a
small number of decoys can seriously impact the users perception of
content availability.
This is a really interesting paper. They measure a number of P2P
network metrics - query response time, temporal stability, spatial
stability and download completion time - using a widely distributed
set of PCs on the [PlanetLab network][6] running scripted P2P
software. This is a clever way to simultaneously study the
characteristics of different P2P networks (notably eDonkey,
eDonky/Overnet, FastTrack and Gnutella) as well as quantitatively
illustrate differences in the underlying network algoritms. The really
nifty part of this paper, in my opinion, involves measuring the
effects of various content poisoning and pollution strategies. Their
results show that fairly simple strategies are fairly simply defeated
while more sophisticated and hybrid strategies aimed at
mucking-up-the-net are difficult to detect and thwart.
[6]: http://www.planet-lab.org/
--
Joseph Lorenzo Hall
UC Berkeley, SIMS PhD Student
http://pobox.com/~joehall/
blog: http://pobox.com/~joehall/nqb2/
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