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[liberationtech] FBI ECSU-DITU
katana at riseup.net
Wed Jul 10 07:52:29 PDT 2013
during a web search for the FBI ECSU-DITU unit - the "switch" between
NSA and the cooperating providers, mentioned in the added WaPo slides -
i stumbled upon
where the author expresses his summary or interpretation of PRISM. From
there i got <http://cryptome.org/2012/08/fbi-spy-letf.pdf>, a summary of
a Law Enforcement Technical Forum meeting from 2010 with some indirect
informations about DITU.
Btw. regarding Skype: on p. 5, a Mr. Scott Sheets from Verizon Wireless
"provided the following detailed information:
# SIP Media Gateway (provided by Level 3 (NB: the same as in
located in Atlanta, is used when Skype related call is dialed. The SIP
Media Gatewat converts the skype call to VoIP,
# Data Channel - skype encrypts it using a propriatary algorithm.
However, at the request of Verizon, decrypting mechanisms were provided,"
But, has anybody more informations about ECSU-DITU?
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