. . . Al Qaeda operatives often communicated via encrypted, or secretly coded, messages that U.S. agents could not decipher, said Darren Hayes, computer information systems program chairman at Pace University. Hayes entered the field of computer forensics in 1990, working in the World Trade Center office of financial services firm Cantor Fitzgerald that was later destroyed in the Sept. 11 attacks.
“Ironically, for such a strong proponent of technology communications, Osama bin Laden appears to have largely refrained from the direct use of satellite telephone technology and the Internet,” Hayes said. “Therefore, the focus for the CIA and the U.S. government would have been on intercepting the communications of his couriers.”
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