Declassified World War I Security Documents
The CIA has just declassified six (1, 2, 3, 4, 5, and 6) documents about World War I security techniques. (The media is reporting they're CIA documents, but the CIA didn't exist before 1947.) Lots of stuff about secret writing and pre-computer tradecraft.
Posted on April 21, 2011 at 6:38 AM • 34 Comments