A fascinating Twitter thread by the former CIA lawyer Brian Greer explains that most of the information classified by the government is put under classification by default, as a “derivative ...

So is the 42% dip that impressive if the bulk of CIA classification is “derivative,” not “original?” ISOO notes that executive branch agencies reported over 95 million derivative ...

Derivative classification can be performed by anyone with a security clearance — that's at least 3 million people, from entry-level soldiers to contractors in private industry to high-ranking ...