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Index/Topics/Homomorphic Hashing

Homomorphic Hashing

The use of homomorphic hashing as a method to detect CSAM while preserving encryption.

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Jan 22, 2026

What technical methods (hashing, AI classifiers) do platforms use to detect CSAM and what are their false-positive rates?

Platforms primarily rely on a two-tier technical stack to detect CSAM: hash‑matching (cryptographic and perceptual) to find known content, and to flag novel or altered material; supplementary approach...

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