Borne from a FOIA request filed in November 2017 by attorney Ty Clevenger, who requested any information regarding Seth Rich and Julian Assange. The NSA informed Clevenger in a letter dated 4 October 2018 that:
Your request has been processed under the provisions of the FOIA. Fifteen documents (32 pages) responsive to your request have been reviewed by this Agency as required by the FOIA and have found to be currently and properly classified in accordance with Executive Order 13526. These documents meet the criteria for classification as set forth in Subparagraph © of Section 1.4 and remains classified TOP SECRET and SECRET.