Subject: Pentagon-wide Advisory Warned...
...against using Signal, even for unclassified information.

"A vulnerability has been identified in the Signal messenger application. Russian professional hacking groups are employing the 'linked devices' features to spy on encrypted conversations."

Google identified Russian hacking groups who are "targeting Signal Messenger to spy on persons of interest."

The Pentagon memo adds, "Please note: third-party messaging apps (e.g. Signal) are permitted by policy for unclassified accountability/recall exercises but are not approved to process or store non-public unclassified information."

At least as far back as 2023, a DoD memo, also seen by NPR, prohibited use of mobile applications for even "controlled unclassified information," which is many degrees less important than information about on-going military operations.

There's almost no precedent for the heads of Defense, State, Intelligence and National Security to be sharing such sensitive military intelligence in a forum that was known to be unsecured.

Well, what do you expect when you put Fox News personalities in charge of the most important government agencies meant to protect America and its citizens?

https://www.npr.org/2025/03/25...