<ul><li>The accidental addition of The Atlantic's editor-in-chief, Jeffrey Goldberg, to a sensitive Signal group chat discussing U.S. military strikes on Houthi rebels in Yemen is being called a stunning breach of military intelligence.</li><li>Signal is considered the gold standard in secure messaging, with end-to-end encryption and strict privacy-first policies, while iMessage provides additional security for Apple users but is exclusive to Apple devices.</li><li>Telegram lacks default end-to-end encryption and Meta's Messenger is still behind Signal in terms of security, although both claim to offer features to protect user data.</li><li>No messaging app can prevent human errors like including the wrong person in a group chat, emphasizing the importance of user caution in maintaining digital privacy.</li></ul>

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

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