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Message: <blockquote data-quote="Hyaenidae" data-source="post: 31466841" data-attributes="member: 530392"><p><h2>What they cannot see</h2> <ul> <li data-xf-list-type="ul">Your file or photo bytes. With E2EE, the ISP in Shanghai, the WiFi owner at a café, or a backbone tap only sees ciphertext blobs, not documents, images, or chat text.</li> <li data-xf-list-type="ul">Content after a server hack. The promise is that the cloud host stores only encrypted data, so a stolen database is useless without your keys.</li> </ul><h2>What they can see</h2> <ul> <li data-xf-list-type="ul">Metadata. E2EE "doesn't disguise its metadata, including information about the sender and receiver (their IP addresses)". For cloud storage, providers openly admit they still see things like file size, time of last modification, and folder memberships, because they need it for quotas and access rules.</li> <li data-xf-list-type="ul">Traffic patterns. A middleman can tell you uploaded ∼47 MB to the cloud at 8:14 pm, from a China Telecom IP, even if they can't read the 47 MB.</li> </ul></blockquote><p></p>

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