V IDEO D ISCUSSION 1: C OPYRIGHT AND P2P A PPLICATIONS 23 Sep 2009 1DT052.

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Presentation transcript:

V IDEO D ISCUSSION 1: C OPYRIGHT AND P2P A PPLICATIONS 23 Sep DT052

2: Application Layer 2 P URE P2P ARCHITECTURE no always-on server arbitrary end systems directly communicate peers are intermittently connected and change IP addresses Examples: File sharing Bit-Torrent (BT) e-mule peer-peer

2: Application Layer 3 P2P: CENTRALIZED INDEX original “Napster” design 1) when peer connects, it informs central server: IP address content 2) Alice queries for “Hey Jude” 3) Alice requests file from Bob centralized directory server peers Alice Bob

2: Application Layer 4 F ILE DISTRIBUTION : B IT T ORRENT tracker: tracks peers participating in torrent torrent: group of peers exchanging chunks of a file obtain list of peers trading chunks peer r P2P file distribution

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

CASE: T HE P IRATE B AY T RIAL 21 Nov Established 31 May The website's servers in Stockholm were raided by Swedish police, causing it to go offline for three days 15 Nov The Pirate Bay announced that it had reached over 25 million unique peers. 17 Apr 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 30M 30 Jun Swedish advertising company Global Gaming Factory X AB announced their intention to buy the site for SEK 60M 15 Aug An anonymous uploader started to share a BitTorrent file containing the whole index for The Pirate Bay 24 Aug 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.

V IDEO Copyright and P2P: Global Collision, National Responses Source: x?fID=569&rID= x?fID=569&rID=11084

D ISCUSSION QUESTIONS Do you think that P2P 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 P2P applications? Any other views and opinions on this topic…

S HORT A RTICLE Write a 1-2 pages summary to express your own views on copyright and P2P applications Submit your article to the course collection box by 30 Sep 2009 (Wednesday) or to it- in plain text in the without attachmentit-