[…] Apple told TechCrunch that the detection of child sexual abuse material (CSAM) is one of several new features aimed at better protecting the children who use its services from online harm, including filters to block potentially sexually explicit photos sent and received through a child’s iMessage account. Another feature will intervene when a user tries to search for CSAM-related terms through Siri and Search.
Most cloud services — Dropbox, Google, and Microsoft to name a few — already scan user files for content that might violate their terms of service or be potentially illegal, like CSAM. But Apple has long resisted scanning users’ files in the cloud by giving users the option to encrypt their data before it ever reaches Apple’s iCloud servers.
Apple said its new CSAM detection technology — NeuralHash — instead works on a user’s device, and can identify if a user uploads known child abuse imagery to iCloud without decrypting the images until a threshold is met and a sequence of checks to verify the content are cleared.
News of Apple’s effort leaked Wednesday when Matthew Green, a cryptography professor at Johns Hopkins University, revealed the existence of the new technology in a series of tweets. The news was met with some resistance from some security experts and privacy advocates, but also users who are accustomed to Apple’s approach to security and privacy that most other companies don’t have.
Apple is trying to calm fears by baking in privacy through multiple layers of encryption, fashioned in a way that requires multiple steps before it ever makes it into the hands of Apple’s final manual review.
No matter what the cause, they have no right to be scanning your stuff at all, for any reason, at any time.