A coalition of companies in the software and recording industries declared yesterday that three of five technologies aimed at stopping the online piracy of music had so far survived attack by hackers seeking to win $10,000 for cracking the security measures. . . .
A coalition of companies in the software and recording industries declared yesterday that three of five technologies aimed at stopping the online piracy of music had so far survived attack by hackers seeking to win $10,000 for cracking the security measures. The coalition, which calls itself the Secure Digital Music Initiative (SDMI), sponsored the public challenge as a means to test the strength of the five technologies, some of which embed a digital "watermark" in the music to prevent unauthorized copying. The technology that the SDMI eventually embraces will be used by the recording industry in an effort to help protect its copyrights while drawing consumers away from the popularity of easily traded MP3 files.

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