Metadata in End-to-End Encryption: Achilles’ Heel or Shield?
ID: 9c62f84a-90cf-57e0-81ad-e4a4ca44be4c
STIX ID: report--9c62f84a-90cf-57e0-81ad-e4a4ca44be4c
Feed Name: Tal Be'ery
Threat Score
**TL;DR:** A zero-click WhatsApp PDF parsing vulnerability was used by Paragon to deploy Graphite spyware; WhatsApp mitigated the 0-click exploit server-side by blocking automatic PDF previews (using exposed request metadata such as mode and mms-type), reducing infection stealth at the cost of blurry previews and revealing how E2EE metadata can enable defensive actions.
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