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A comment on Twitter discloses national security letters. Parent comment

Re:Twitter discloses national security letters by krzrak on Friday January 27, 2017 @06:06PM (#13503567)
> They stick to plain ASCII and the same font everywhere to reduce metadata leakage.

Could you please elaborate?

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Re:Twitter discloses national security letters by nutschig on Friday January 27, 2017 @06:11PM (#13503602)
Knowing what fonts / styles any one author uses could be used to group together internal intelligence structures.
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Re:Twitter discloses national security letters by nutschig on Friday January 27, 2017 @06:12PM (#13503610)
Fingerprints like this: https://amiunique.org/fp
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