These tools will allow Apple to scan your iPhone photos for photos that match a specific perceptual hash, and report them to Apple servers if too many appear.

— Matthew Green (@matthew_d_green)August 5, 2021

Apple's filtering of iMessage and iCloud is not a slippery slope to backdoors that suppress speech and make our communications less secure. We’re already there: this is a fully-built system just waiting for external pressure to make the slightest change.https://t.co/f2nv062t2n

— EFF (@EFF)August 5, 2021

These "child protection" features are going to get queer kids kicked out of their homes, beaten, or worse.https://t.co/VaThf222TP

— Kendra Albert (@KendraSerra)August 5, 2021

EFF reports that the iMessage nudity notifications will not go to parents if the kid is between 13-17 but that is not anywhere in the Apple documentation that I can find.https://t.co/Ma1BdyqZfW

— Kendra Albert (@KendraSerra)August 6, 2021

Apple plans to modify iPhones to constantly scan for contraband:

“It is an absolutely appalling idea, because it is going to lead to distributed bulk surveillance of our phones and laptops,” said Ross Anderson, professor of security engineering.https://t.co/rS92HR3pUZ

— Edward Snowden (@Snowden)August 5, 2021

This is the worst idea in Apple history, and I don't say that lightly.

It destroys their credibility on privacy. It will be abused by governments. It will get gay children killed and disowned. This is the worst idea ever.https://t.co/M2EIn2jUK2

— Brianna Wu (@BriannaWu)August 5, 2021

Just to state: Apple's scanning does not detect photos of child abuse. It detects a list of known banned images added to a database, which are initially child abuse imagery found circulating elsewhere. What images are added over time is arbitrary. It doesn't know what a child is.

— SoS (@SwiftOnSecurity)August 5, 2021

In other words, not only does the policy have to be exceptionally robust, so does the implementation.

— matt blaze (@mattblaze)August 6, 2021

I spent another hour searching, and there indeed appears to be no way to delete a useless at-icloud-dot-com email account that Apple used to force everyone to take, except for deleting your entire Apple account and losing everything you've bought. Lock-in indeed!pic.twitter.com/JT5KOta5jA

— Tim Sweeney (@TimSweeneyEpic)August 7, 2021

I will share some very detailed thoughts on this related topic later.

— Tim Sweeney (@TimSweeneyEpic)August 6, 2021

I believe in privacy - including for kids whose sexual abuse is documented and spread online without consent. These efforts announced by@Appleare a major step forward in the fight to eliminate CSAM from the internet.https://t.co/TQIxHlu4EX

— ashton kutcher (@aplusk)August 5, 2021