Craig Federighi Acknowledges Confusion Around Apple Child Safety Features and Explains New Details About Safeguards

Apple's senior vice president of software engineering, Craig Federighi, has today defended the company's controversial planned child safety features in a significant interview with The Wall Street Journal, revealing a number of new details about the safeguards built into Apple's system for scanning users' photos libraries for Child Sexual Abuse Material (CSAM).

craig wwdc 2021 privacy
Federighi admitted that Apple had handled last week's announcement of the two new features poorly, relating to detecting explicit content in Messages for children and CSAM content stored in iCloud Photos libraries, and acknowledged the widespread confusion around the tools:

It's really clear a lot of messages got jumbled pretty badly in terms of how things were understood. We wish that this would've come out a little more clearly for everyone because we feel very positive and strongly about what we're doing.

[...]

In hindsight, introducing these two features at the same time was a recipe for this kind of confusion. By releasing them at the same time, people technically connected them and got very scared: what's happening with my messages? The answer is...nothing is happening with your messages.

The Communications Safety feature means that if children send or receive explicit images via iMessage, they will be warned before viewing it, the image will be blurred, and there will be an option for their parents to be alerted. CSAM scanning, on the other hand, attempts to match users' photos with hashed images of known CSAM before they are uploaded to iCloud. Accounts that have had CSAM detected will then be subject to a manual review by Apple and may be reported to the National Center for Missing and Exploited Children (NCMEC).

The new features have been subject to a large amount of criticism from users, security researchers, the Electronic Frontier Foundation (EFF) and Edward Snowden, Facebook's former security chief, and even Apple employees.

Amid these criticisms, Federighi addressed one of the main areas of concern, emphasizing that Apple's system will be protected against being taken advantage of by governments or other third parties with "multiple levels of auditability."


Federighi also revealed a number of new details around the system's safeguards, such as the fact that a user will need to meet around 30 matches for CSAM content in their Photos library before Apple is alerted, whereupon it will confirm if those images appear to be genuine instances of CSAM.

If and only if you meet a threshold of something on the order of 30 known child pornographic images matching, only then does Apple know anything about your account and know anything about those images, and at that point, only knows about those images, not about any of your other images. This isn't doing some analysis for did you have a picture of your child in the bathtub? Or, for that matter, did you have a picture of some pornography of any other sort? This is literally only matching on the exact fingerprints of specific known child pornographic images.

He also pointed out the security advantage of placing the matching process on the iPhone directly, rather than it occurring on ‌iCloud‌'s servers.

Because it's on the [phone], security researchers are constantly able to introspect what’s happening in Apple’s [phone] software. So if any changes were made that were to expand the scope of this in some way —in a way that we had committed to not doing—there's verifiability, they can spot that that's happening.

When asked if the database of images used to match CSAM content on users' devices could be compromised by having other materials inserted, such as political content in certain regions, Federighi explained that the database is constructed from known CSAM images from multiple child safety organizations, with at least two being "in distinct jurisdictions," to protect against abuse of the system.

These child protection organizations, as well as an independent auditor, will be able to verify that the database of images only consists of content from those entities, according to Federighi.

Federighi's interview is among the biggest PR pushbacks from Apple so far following the mixed public response to the announcement of the child safety features, but the company has also repeatedly attempted to address users' concerns, publishing an FAQ and directly addressing concerns in interviews with the media.

Top Rated Comments

thadoggfather Avatar
34 months ago
It is confusing... but they are gaslighting us into thinking it is universal confusion when there is a large subset of people with clear understanding coupled with dissent
Score: 127 Votes (Like | Disagree)
AndiG Avatar
34 months ago
[HEADING=2]Federighi just doesn’t understand a simple fact. If you don‘t need a local scanning system - don‘t build one.[/HEADING]
Score: 112 Votes (Like | Disagree)
xxray Avatar
34 months ago

Because it's on the [phone], security researchers are constantly able to introspect what’s happening in Apple’s [phone] software. So if any changes were made that were to expand the scope of this in some way —in a way that we had committed to not doing—there's verifiability, they can spot that that's happening.
How does this change the fact at all that there’s now essentially a new backdoor to be abused that’s installed in iOS 15?

Stop defending and get rid of this BS, Apple.
Score: 107 Votes (Like | Disagree)
scheinderrob Avatar
34 months ago
"but think of the children" has been used for decades now to erode privacy.

people seem to think if you are against it, you support it. they know exactly what they are doing.
Score: 97 Votes (Like | Disagree)
JPSaltzman Avatar
34 months ago
The more you have to "explain" over and over some new controversial "feature", the more it begins to stink.

(And I don't even use iCloud to store anything important -- especially photos!)
Score: 88 Votes (Like | Disagree)
Mac Fly (film) Avatar
34 months ago
So someone who looks at child porn photos stops using iCloud Photos. What about the rest of us who want privacy? What about future governmental interference?
Score: 81 Votes (Like | Disagree)

Popular Stories

reset password request iphone

Warning: Apple Users Targeted in Phishing Attack Involving Rapid Password Reset Requests

Tuesday March 26, 2024 4:34 pm PDT by
Phishing attacks taking advantage of Apple's password reset feature have become increasingly common, according to a report from KrebsOnSecurity. Multiple Apple users have been targeted in an attack that bombards them with an endless stream of notifications or multi-factor authentication (MFA) messages in an attempt to cause panic so they'll respond favorably to social engineering. An...
iPhone Home Screen Gradient Blank Spaces 1

Sources: iOS 18 Lets Apps Be Placed Anywhere on Home Screen Grid

Sunday March 24, 2024 1:33 pm PDT by
iOS 18 will give iPhone users greater control over Home Screen app icon arrangement, according to sources familiar with the matter. While app icons will likely remain locked to an invisible grid system on the Home Screen, to ensure there is some uniformity, our sources say that users will be able to arrange icons more freely on iOS 18. For example, we expect that the update will introduce...
Generic iOS 18 Feature Purple

iOS 18: What to Expect From 'Biggest' Update in iPhone's History

Wednesday March 27, 2024 11:10 am PDT by
At least some Apple software engineers continue to believe that iOS 18 will be the "biggest" update in the iPhone's history, according to Bloomberg's Mark Gurman. Below, we recap rumored features and changes for the iPhone. "The iOS 18 update is expected to be the most ambitious overhaul of the iPhone's software in its history, according to people working on the upgrade," wrote Gurman, in a r...
maxresdefault

Apple Announces WWDC 2024 Event for June 10 to 14

Tuesday March 26, 2024 10:02 am PDT by
Apple today announced that its 35th annual Worldwide Developers Conference is set to take place from Monday, June 10 to Friday, June 14. As with WWDC events since 2020, WWDC 2024 will be an online event that is open to all developers at no cost. Subscribe to the MacRumors YouTube channel for more videos. WWDC 2024 will include online sessions and labs so that developers can learn about new...
apple maps 3d feature

Apple Maps May Gain Custom Routes With iOS 18

Tuesday March 26, 2024 3:10 pm PDT by
Apple may be planning to add support for "custom routes" in Apple Maps in iOS 18, according to code reviewed by MacRumors. Apple Maps does not currently offer a way to input self-selected routes, with Maps users limited to Apple's pre-selected options, but that may change in iOS 18. Apple has pushed an iOS 18 file to its maps backend labeled "CustomRouteCreation." While not much is revealed...
iPad Pro 2024 Landscape Camera Feature

New iPad Pro Again Rumored to Feature Landscape Front-Facing Camera

Monday March 25, 2024 5:43 am PDT by
The next-generation iPad Pro will feature a landscape-oriented front-facing camera for the first time, according to the Apple leaker known as "Instant Digital." Instant Digital reiterated the design change earlier today on Weibo with a simple accompanying 2D image. The post reveals that the entire TrueDepth camera array will move to the right side of the device, while the microphone will...
sonoma desktop wwdc

Apple Releases macOS Sonoma 14.4.1 With Fix for USB Hub Bug

Monday March 25, 2024 10:10 am PDT by
Apple today released macOS Sonoma 14.4.1, a minor update for the macOS Sonoma operating system that launched last September. macOS Sonoma 14.4.1 comes three weeks after macOS Sonoma 14.4. The ‌‌‌‌macOS Sonoma‌‌ 14.4‌.1 update can be downloaded for free on all eligible Macs using the Software Update section of System Settings. There's also a macOS 13.6.6 release for those who...