Earlier this week, Elon Musk reignited a public debate over chat app privacy after calling WhatsApp "not secure," following a lawsuit that accuses Meta Platforms, Inc. (NASDAQ:META) of misleading users about its end-to-end encryption claims.Musk Targets WhatsApp, Signal, Promotes X ChatMusk posted on X that "WhatsApp is not secure" and alleged that "even Signal is questionable," urging users to switch to X Chat, the messaging feature built into his social media platform.In 2021, Musk's endorsement sent Sign ...