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Internet pioneer Leonard Kleinrock on the 'dark side' of the Web




Leonard Kleinrock, a computer science professor who on October 29, 1969 headed a team that sent the first message over the ARPANET, which later became the Internet, poses for a photo at a one-day conference celebrating the 40th anniversary of the Internet, at the University of California Los Angeles campus on October 29, 2009.
Leonard Kleinrock, a computer science professor who on October 29, 1969 headed a team that sent the first message over the ARPANET, which later became the Internet, poses for a photo at a one-day conference celebrating the 40th anniversary of the Internet, at the University of California Los Angeles campus on October 29, 2009.
ROBYN BECK/AFP/Getty Images

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Given the news about the PRISM program, Take Two checks in with an early pioneer of the internet - Leonard Kleinrock, who's credited with the first internet transmission.

He never anticipated what he calls the "dark side" of the Internet when he sent the first host to host message from UCLA to Stanford Research Institute in 1969.