Don't expect data on P2P networks to be private, judge rules
Defendants claimed that searching for files on their computers violated Fourth Amendment rights
Computerworld - There can be no expectation of privacy in data exposed to the Internet over a peer-to-peer file-sharing network, a federal judge in Vermont ruled in a case involving three individuals charged with possession of child pornography.
The three men had argued that police illegally gathered information from their computers using an automated P2P search tool and then used that information to obtain probable cause warrants for searching their computers. Each of the defendants was later charged with possession of child pornography based on evidence seized from their computers.
In a motion filed earlier this year, defendants Derek Thomas, Douglas Neale and Stephan Leikert asked the U.S. District Court for the District of Vermont to suppress the evidence, claiming it had been obtained illegally.
The defendants contended that the initial use of the automated P2P search tool to gather information on the contents of their computers, constituted a warrantless search of their systems. They maintained that police violated Fourth Amendment provisions against unreasonable search by looking at private files on each of their systems using the P2P search tool.
They also argued that several of the statements made by investigators to show probable cause for the search warrants were based on incorrect information.
In a 39-page ruling released Friday, District Court Judge Christina Reiss denied the motion to suppress and held that the defendants had essentially given up privacy claims by making the data publicly available on the Internet over a P2P network.
"The evidence overwhelmingly demonstrates that the only information accessed was made publicly available by the IP address or the software it was using," Reiss wrote. "Accordingly, either intentionally or inadvertently, through the use of peer-to-peer file sharing software, Defendants exposed to the public the information they now claim was private."
The ruling is similar to ones reached by other courts in disputes involving documents exposed on the Internet via peer-to-peer networks. Courts in the 11th Circuit, 10th Circuit and 8th Circuit have all held that there can be no expectation of privacy if the contents of a computer can be accessed freely over the public Internet via a file sharing network.
Law blog FourthAmendment.com was the first to report the judge's ruling in the case.
Thomas, Neale and Leikert were arrested and indicted last year in a federal and state law enforcement operation named "Operation Greenwave," that targeted people who use peer-to-peer file sharing networks to distribute child pornography.
As part of the operation, investigators used a suite of software tools, collectively known as the Child Protection System, from privately held TLO LLC, to conduct automated searches for files containing images of child porn on P2P networks. The system allowed investigators to search multiple file-sharing networks using query terms commonly associated with such files.
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