Unverified50% confidenceFactExact time
PhotoDNA由微软研究院与达特茅斯学院于2009年联合开发，最初用于协助NCMEC打击CSAM
1
Sources
50%
Confidence
Long-term
Relevance
7/9/2026
First Seen
Sources
Chat Control Explained: The EU's Chat Monitoring Legislation vs. Encryption Privacy
hackernewshackernews7/7/2026
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