Notices for planetlab: message number 00053
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Re: recent DMCA complaints

-------- Original Message --------
Subject: 	[PlanetLab-PIs] Re: recent DMCA complaints
Date: 	Wed, 23 Sep 2009 14:11:37 -0400
From: 	Larry Peterson <llp@cs.princeton.edu>
To: 	pis@lists.planet-lab.org
CC: 	techs@lists.planet-lab.org

Typo in the URL... It should be


On Wed, Sep 23, 2009 at 1:46 PM, Larry Peterson <llp@cs.princeton.edu
<mailto:llp@cs.princeton.edu>> wrote:

    We are seeing a second round of complaints from VPA -- they are
    second notices, not reports of new events.

Please be assured that this is a false positive. There is no copyrighted
    material on the PlanetLab nodes being cited. You can learn more details
    by going to


    and looking at the top-most item (labeled "DMCA take-down notice").

    I'm not sure what more we can do about this. VPA is running a script
    that falsely accuses PlanetLab sites of downloading illegal content,
    and they have not been responsive to our requests to alter their
    (And, based on their web site, they do not appear to have much
    to stop sending such notices.)


    On Fri, Aug 28, 2009 at 12:27 PM, Larry Peterson
    <llp@cs.princeton.edu <mailto:llp@cs.princeton.edu>> wrote:

        We have received a set of complaints involving the transfer of
        copyrighted content over Bittorrent. The complaints were all
        lodged by https://www.videoprotectionalliance.com and they
        all appear to be related. I want to make sure all PIs know about
        the situation.

        Our traffic auditing system, which logs all outgoing traffic across
        PlanetLab, has not recorded any such traffic. This, combined with
        the fact that certain ports reported in these complaints belong to
        PlanetLab's reserved port range has given us strong reason to
        believe that the no PlanetLab nodes were involved in the actual
distribution of this copyrighted data. To confirm this, we contacted
        all researchers who had been experimenting with the Bittorrent
        protocol to communicate with non-PlanetLab hosts during the
        periods of infringement, and as expected, only random data was
        being used in those experiments. We also found no copyrighted
        material when we inspected the file system on the flagged nodes.

        To further investigate the problem, we looked into CDN traffic, and
        came to the conclusion that CoralCDN was relaying Bittorrent
        'tracker' URLs that tracked all of the copyrighted data reported in
        the complaints. Tracker URLs are web pages that contain a list of
locations at which a certain Bittorrent file can be found. Note that
        *no content* was cached or hosted on PlanetLab nodes, and no
        PlanetLab nodes were being advertised as serving such data. All
        CoralCDN was doing was to efficiently relay Bittorrent meta-data.

        For the time being, CoralCDN has since blacklisted the actual
        tracker (denis.stalker.h3q.com <http://denis.stalker.h3q.com>).
        On the other hand, there's a
        pretty compelling argument that doing so is not necessary, and
        this complaint should be treated as a false alarm. The PlanetLab
        Steering Committee will take up the question of what long-term
        policy we should adopt.

        If any additional information comes to light, I'll be sure to
        pass it