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Mo’ Platforms, Mo’ Problems: WhatsApp’s View Once privacy issue
Mo’ Platforms, Mo’ Problems: WhatsApp’s View Once privacy issue Zengo is the first keyless bitcoin and cryptocurrency wallet — the most simple and secure way to manage your crypto assets.
TL;DR: As part of our ongoing security research and countdown to our industry-defining Zengo Desktop ‘s full launch, we have identified a critical privacy flaw in Meta’s WhatsApp, the world’s most popular Instant Messaging (IM) app. As we continue to develop the world’s pioneering MPC crypto wallet, the Zengo X Research Team is looking into its closest-living relative, the Instant Messaging (IM) apps domain. When we looked into the implementation details we were very surprised to find that although “View once” is meant to be limited to platforms in which the app can control its displayed content and prevent other processes from abusing it, it is not enforced by WhatsApp’s API server.
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