Comment Impacts all messaging apps really (Score 1) 13
This was an exploit chain that relied on a flaw in WhatsApp to more easily deliver a malicious payload to the underlying iOS device (for CVE-2025-43300) but don't think that the core exploit used here isn't accessible via Signal, FB Messenger, Threema, etc. Messaging apps are by far the highest risk attack surface for mobile since all an attacker needs for your device to process a malicious payload is your email address or phone #. So for those saying "down with WhatsApp", your favourite messenger is likely at risk too until you update iOS.
If you received a threat notification from Meta, reach out to the team running the Am I Secure? app on the App Store.