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  1. T

    REQUEST: telephony (IN)security literature

    Any resource about telephony (IN)security? landline & mobile (GSM)? :confused:
  2. T

    New on this forum (LatinAmerica)

    I interested on do some bussines in Latinoamerica and i need some resourses from card bussines. Thas the reason for my registration. Thx.
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