Takayuki Sugiura: Winny P2P Security (Japanese)

Black Hat Briefings, Japan 2006 [Audio] Presentations from the security conference

"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."