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Redactions
At the Eurocrypt conference of cryptographers in May 2004 in Interlaken, Switzerland, David Naccache, director of an information security lab at Gemplus S.A., and Claire Whelan, a computer science graduate student at Dublin City University, analyzed a redacted portion of the PDB:
An Egyptian Islamic Jihad (EIJ) operative told an [redacted] service at the same time that Bin Ladin was planning to exploit the operative's access to the US to mount a terrorist strike
Cryptographers determined with high confidence that the redacted word in the sentence was "Egyptian"
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