Which is the most secure messaging app? Expert weighs in after U.S. war plan leak blunder

In what is being called one of the most stunning intelligence breaches in recent history, a messaging mishap has thrust digital security back into the spotlight. White House officials, in a shocking blunder, accidentally added The Atlantic‘s editor-in-chief, Jeffrey Goldberg, to a highly sensitive Signal group chat—one that was reportedly discussing U.S. military strikes on Houthi rebels in Yemen.

Goldberg, stunned by the error, suddenly found himself in a conversation alongside key figures like Vice President JD Vance and Defense Secretary Pete…