NPR reports that a Pentagon-wide advisory went out just a week ago warning against using the messaging app Signal, even for unclassified information, due to infiltration by Russian hacking groups.
The Pentagon memo includes a reminder that 3rd party messaging apps (e.g. Signal) are not approved to process or store non-public unclassified information (e.g, Protected, FOUO, CUI, etc)." And certainly not approved for classified info.
So, the question for the WH - Why?
https://www.npr.org/2025/03/25/nx-s1-5339801/pentagon-email-signal-vulnerability
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