# Claim 875

Federal investigators framed the article as damaging national security by indirectly revealing that the United States had penetrated Japan's naval codes.

Published 2026-09-26. Last reviewed 2026-09-26. 1 source.

- Statement: Federal investigators framed the article as damaging national security by indirectly revealing that the United States had penetrated Japan's naval codes.
- Field: stated_justification
- Value: National security rationale
- About: [incident 1942-us-chicago-tribune-midway-espionage-act](https://thewaronnews.com/incidents/1942-us-chicago-tribune-midway-espionage-act)
- Source: Secrecy and Leaks: When the U.S. Government Prosecuted the Chicago Tribune. https://nsarchive.gwu.edu/briefing-book/intelligence/2017-10-25/secrecy-leaks-when-us-government-prosecuted-chicago-tribune
- Publisher: National Security Archive, George Washington University
- Method: outlet report
- Checked: 2026-09-26
- Confidence: medium
- Status: current
- Source date: 2017-10-25

## Quotation from the source

> detail FBI, Justice Department, and Navy efforts to charge the Tribune with damaging national security by indirectly alluding to U.S. penetration of Japan's naval codes

Source page: https://thewaronnews.com/claims/875. The War On News, CC BY 4.0.