Takayuki Sugiura: Winny P2P Security (Japanese)

"There have been a series of information leak incidents being
happening in Japan regarding to the use of P2P file sharing
softwares. But those incidents are just a tip of iceberg. There were
expected to be tens of thousands of incidents that even not reported
in the news. P2P file sharing softwares usually designed to enhance
user anonymity therefore users of such software can enjoy act of
violating the copyright law. However, contrary to such users
assumption, the nature of P2P networks are nearly publicly open
networks for either the files that being uploaded or downloaded.

This talk will explain about the reason of how the encryption
deployed by Winny and Share could be defeated, what will be the
change by such encryption becoming disarmed, and what could be the
evidence of the information been made public, with the details based
on the characteristic of public openness resides in P2P and how the
characteristics affect the content of communicaton exposed on the P2P
networks that no longer have anonymity."