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Ärende: BitTorrent Gives Hollywood a Headache
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http://abcnews.go.com/

'BitTorrent' Gives Hollywood a Headache

Movies Swapped Online Using 'BitTorrent' Give Hollywood a Blockbuster
Headache

LOS ANGELES Dec 10, 2004 - Bram Cohen didn't set out to upset Hollywood
movie studios. But his innovative online file-sharing software, BitTorrent,
has grown into a piracy problem the film industry is struggling to handle.

As its name suggests, the software lets computer users share large chunks
of
data. But unlike other popular file-sharing programs, the more people swap
data on BitTorrent, the quicker it flows and that includes such large files
as feature films and computer games.

Because of its speed and effectiveness, BitTorrent steadily gained in
popularity after the recording industry began cracking down last year on
users of Kazaa, Morpheus, Grokster and other established file-sharing
software.

The program now accounts for as much as half of all online file-sharing
activity, says Andrew Parker, chief technology officer of Britain-based
CacheLogic, which monitors such traffic.

"BitTorrent is more of a threat because it is probably the latest and best
technological tool for transferring large files like movies," said John
Malcolm, senior vice president of anti-piracy operations for the Motion
Picture Association of America. "It is unusual, perhaps unique, in that the
moment you start downloading you are also uploading," he added. "It's what
makes it so efficient."

Cohen created BitTorrent in 2001 as a hobby after the dot-com crash left
him
unemployed. He says the aim was to enable computer users to easily
distribute content online not specifically copyrighted content.

"It seems pretty clear that a lot of people are actively interested in
engaging in wanton piracy," said Cohen, 29, of Bellevue, Wash. "As far as
I'm concerned, they're just pushing around bits, and what bits it is
they're
pushing around is not really a concern of mine. There's not much I can do
about it."

BitTorrent has proven to be resistant to some of the countermeasures the
entertainment industry has taken to sabotage file-sharing, including a
process known as file-spoofing in which incomplete or decoy versions of
songs or other material are uploaded to discourage piracy.

"Spoofing is very difficult on BitTorrent, if at all possible," said Mark
Ishikawa, chief executive of online tracking firm BayTSP Inc. "There's no
defense for this one."

Programs such as Kazaa and Morpheus allow users to link their PCs to
computer networks and then query a search engine for the file or title
they're seeking. The software then churns out a list of other computers
sharing the file.

The process is simple and straightforward, which makes it relatively easy
to
corrupt with spoofed files.

With BitTorrent, however, users don't find whole files. The program seeks
out torrent files, also known as seed files, that are hosted by a number of
Web sites.

The files on the Web sites are not songs or movies but serve as markers
that
point the way to other users sharing a given file. BitTorrent then
assembles
complete files from multiple chunks of data obtained from everyone who is
sharing the file.

Attempts to upload bogus files to corrupt the process fail because the
BitTorrent program follows a blueprint of the original file when piecing it
together.

"It's very difficult for an interdiction company to get in the middle of
that system," said Ishikawa, whose company combs file-sharing networks on
behalf of Hollywood studios and alerts clients when their movies turn up on
the Internet.

Some of the BitTorrent host sites, like SuprNova.org, generate a daily list
of new seed files added by users. The site recently had listings for movies
such as "Van Helsing" and "Wimbledon," which is not scheduled for release
on
DVD for another three weeks.

Some sites offer digitized broadcasts of "The Daily Show With Jon Stewart,"
computer games like "Star Trek: Klingon Academy" and "Half Life 2," e-books
on the physics behind an atomic bomb, even footage of kidnap victims in the
Middle East.

"A bunch of the different beheadings are online," Ishikawa said.

Downhill Battle, a Worcester, Mass.-based independent music group that has
developed its own BitTorrent-based software called Blog Torrent, says the
technology is much more than a tool for swapping copyright movies and
software (a blog is a Web journal).

"What we're excited about as far as BitTorrent goes is the possibility for
people to blog video and blog their own home movies (and) independent films
and have a way to distribute them online without having to have a big
budget
for Web-hosting," said Nicholas Reville, one of the group's directors.

"Bandwidth has been a big barrier," he said. "BitTorrent solved that."

While some of the BitTorrent sites that host seed files have been forced to
shut down, many others escape scrutiny because they're only hosting marker
files, not copyrighted material.

Malcolm of the MPAA says his organization is not focusing any more or less
on BitTorrent than other file-sharing system. He declined to say whether
the
trade group intends to sue Cohen and wouldn't name any BitTorrent users who
may have been included in the entertainment industry's latest wave of
lawsuits.

"Anyone who uses BitTorrent and is under the illusion that they are
anonymous are sorely mistaken," Malcolm said. "There is no reason why those
lawsuits wouldn't include BitTorrent" users.

So far, Cohen said, he has not become a target of the entertainment
industry, which has aggressively pursued litigation against other
file-sharing software distributors, with mixed success. On Friday, the U.S.
Supreme Court agreed to hear an appeal by movie studios and music labels of
a ruling that found Grokster Ltd. and StreamCast Networks Inc., the firm
behind the Morpheus software, to not be responsible for their customers'
online swapping of copyright songs and movies.

For his part, Cohen said he has received just one legal warning, over a
computer game that was being distributed using BitTorrent.

"Someone else was doing something with BitTorrent that I had no knowledge
of," Cohen said. "It's not being done on any machines I have any control
over . what do you want me to do?"

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