Perceptual hashing tools for detecting child sexual abuse material
Perceptual hashing tools for detecting child sexual abuse material - thorn-oss/perception
Perceptual hashing tools for detecting child sexual abuse material launched on November 4, 2019 with 92 votes, #352 of 3,203 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 6 years on.
In plain words
This tool uses perceptual hashing technology to identify child sexual abuse material by comparing images against known databases. It was designed for organizations, platforms, and researchers working to combat child exploitation. The tool operates by creating digital fingerprints of images that remain consistent even when files are slightly modified, enabling detection across large datasets. Available as open-source software on GitHub, it provides a technical approach for those responsible for content moderation and child safety.
written from the facts on this page · September 2026
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