Unverified50% confidenceFactExact time
The typical implementation of client-side scanning (CSS) is hash matching, where hash values of known illegal content are pre-loaded on the device and messages are compared against the blacklist before encryption.
1
Sources
50%
Confidence
Long-term
Relevance
7/24/2026
First Seen
Sources
Chat Control解析：欧盟隐私监管争议与自托管的真实价值
redditr/selfhosted7/12/2026
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