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SHA1 Identification

The use of hash-based identification systems like SHA1 in identifying CSAM.

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Jan 25, 2026
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How do hash‑based CSAM detection systems work and why do they fail for AI‑generated images?

works by converting known illegal images into compact digital fingerprints (hashes) and scanning uploads for matches, a method that reliably finds previously identified material but only that material...

Jan 6, 2026

Can metadata or device activity alone justify a search for CSAM possession?

Metadata and device-activity patterns can create probable cause sufficient to obtain warrants to seize or initially search devices in CSAM investigations, but they rarely prove the element of knowing ...