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Ahead of the Signal leak, the Pentagon warned of the app's weaknesses
A Pentagon-wide advisory that went out one week ago warned against using Signal, the messaging app, even for unclassified information.
toggle caption NPR A Pentagon-wide advisory went out one week ago warning against using the messaging app Signal, even for unclassified information. "A vulnerability has been identified in the Signal messenger application," begins the department-wide email, dated March 18, obtained by NPR. The encrypted Signal app is what Defense Secretary Pete Hegseth and other leading national security officials within the administration used to discuss bombing Houthi earlier this month.
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