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@GossiTheDog @kchr @kimzetter
Nope. Show me where #Signal is approved anywhere within the #USGovernment for official non-public communications.

#CISA is recommending best practices in the absence of any official guidelines: "Organizations may already have these best practices in place, such as secure communication platforms and multifactor authentication (MFA) policies."

And you can bet 100% that everybody in the national security apparatus has official policies and apps. Signal isn't one.