What is a hash?
A hash is a unique digital fingerprint, or label that identifies a picture of confirmed child sexual abuse. Our hashes are created in various formats (think of them like different languages) including PhotoDNA, SHA1, SHA256 and MD5.
By using our Hash List, tech companies can stop criminals from uploading, downloading, viewing, sharing or hosting known images and videos showing child sexual abuse.
By the end of 2021, we had created 1,004,611 unique hashes to share with technology companies.