Re:'Tor Stinks' presentation – read the full document
by grier on Friday October 04, 2013 @12:13PM
(#6496212)
U : Unclassified,
S : Secret,
SI : special intelligence (an SCI control marking),
REL : marking that designates release
There's a bunch more too:
http://en.wikipedia.org/wiki/Classified_information
http://en.wikipedia.org/wiki/Sensitive_Compartmented_Informa...
For instance, what is (U)? Or (S), (SI), and (REL)?