1 DT 052 VIDEO DISCUSSION 1 COPYRIGHT AND

1 DT 052 VIDEO DISCUSSION 1: COPYRIGHT AND P 2 P APPLICATIONS 23 Sep 2009

PURE P 2 P ARCHITECTURE no always-on server arbitrary end systems directly communicate peer-peer peers are intermittently connected and change IP addresses 2: Application Layer Examples: File sharing Bit-Torrent (BT) e-mule 2

P 2 P: CENTRALIZED INDEX centralized directory server 1 peers 1 IP address content 2) Alice queries for “Hey Jude” 3) Alice requests file from Bob 3 1 2 1 Alice 3 2: Application Layer original “Napster” design 1) when peer connects, it informs central server: Bob

FILE DISTRIBUTION: BITTORRENT r P 2 P file distribution torrent: group of peers exchanging chunks of a file tracker: tracks peers participating in torrent obtain list of peers trading chunks peer 2: Application Layer 4

BITTORRENT file divided into 256 KB chunks. peers join torrent network and download peers upload chunks to other peers may come and go 2: Application Layer 5

CASE: THE PIRATE BAY TRIAL 21 Nov 2003 - Established 31 May 2006 - The website's servers in Stockholm were raided by Swedish police, causing it to go offline for three days 15 Nov 2008 - The Pirate Bay announced that it had reached over 25 million unique peers. 17 Apr 2009 - Peter Sunde, Fredrik Neij, Gottfrid Svartholm and Carl Lundström were found guilty of assistance to copyright infringement and sentenced to one year in prison and payment of a fine of SEK 30 M 30 Jun 2009 - Swedish advertising company Global Gaming Factory X AB announced their intention to buy the site for SEK 60 M 15 Aug 2009 - An anonymous uploader started to share a Bit. Torrent file containing the whole index for The Pirate Bay 24 Aug 2009 - Swedish court ordered the upstream provider Black Internet to block traffic to the site. The website was inaccessible for 3 hours and it was claimed that all services were restored within 24 hours.

VIDEO Copyright and P 2 P: Global Collision, National Responses Source: http: //www. researchchannel. org/prog/displayevent. asp x? f. ID=569&r. ID=11084

DISCUSSION QUESTIONS Do you think that P 2 P applications infringe copyright? Will the following parties be liable? People who host and maintain the sites People who post the advertisements Users who upload the data Users who download the data ISP who provides the communication media For (1) the site / (2) users to download and upload How would you solve the copyright problem for P 2 P applications? Any other views and opinions on this topic…

SHORT ARTICLE Write a 1 -2 pages summary to express your own views on copyright and P 2 P applications Submit your article to the course collection box by 30 Sep 2009 (Wednesday) or email to itdatakom@listserv. uu. se in plain text in the email without attachment