New analysis of Snowden PDFs has uncovered that entire sections describing domestic U.S. intelligence facilities were deliberately removed from two published documents, while foreign facilities remained visible. The evidence was found in the PDF metadata of documents released by The Intercept in 2016 and a 2017 collaboration with the Australian Broadcasting Corporation. This is the first public revelation of such hidden text, which included operational designations for the Potomac Mission Ground Station (PMGS) in Washington, DC, and the Consolidated Denver Mission Ground Station (CDMGS) at Buckley Space Force Base, Aurora, Colorado.

The removed sections were not merely redacted; the text was fully deleted from the visible document but persisted in the internal version history. For the intelligence community, this demonstrates a systematic approach to obfuscating domestic facilities while exposing foreign ones, raising questions about the integrity of public disclosures and the potential for metadata to leak sensitive information. For cybersecurity professionals, it highlights the importance of scrutinizing document metadata and version control to detect hidden alterations.

The findings also underscore the need for stricter controls on how classified documents are processed and published.