According to former MI5 officer Peter Wright, the British Security Service analyzed emissions from French cipher equipment in the 1960s.
2.
He was asked to look at the bombes that were being built by NCR and at the security of certain speech cipher equipment under development at Bell Labs.
3.
"Rockex " was named after the Rockefeller Center, together with the tradition for naming British cipher equipment with the suffix "-ex " ( e . g.
4.
After V-E Day, Levenson was sent with a group of British and American officers to Germany, assigned to track down German cipher equipment and to locate and interrogate German cryptanalysts.
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