Meta’s Data: Meta’s WhatsApp Fix for View Once and its Impact on Metadata
ID: fed21547-a369-5c82-99e1-334b1c282063
STIX ID: report--fed21547-a369-5c82-99e1-334b1c282063
Feed Name: Tal Be'ery
Threat Score
This analysis examines a privacy vulnerability in WhatsApp's "View Once" media feature that allowed modified Web clients or browser extensions to bypass view-once protections; it documents the discovery, proof-of-concept exploitation (including public extensions with ~10k users), the server-side remediation rolled out by Meta in mid-November 2024, and the resulting privacy trade-off of increased unencrypted metadata exposure to WhatsApp servers.
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