Prioritize user privacy and data security in your app. Discuss best practices for data handling, user consent, and security measures to protect user information.

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How to undisplay `Private Access` in `Contacts Access` when i use `CNContactPickerViewController`?
In iOS 18, i use CNContactPickerViewController to access to Contacts (i know it is one-time access). After first pick up one contact, the Setting > Apps > my app > Contacts shows Private Access without any option to close it. Is there any way to close it and undisplay it ? I tried to uninstall and reinstall my app, but it didn't work.
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318
Apr ’25
App Attest – DCAppAttestService.isSupported == false on some devices (~0.23%)
Hi Apple team, For our iPhone app (App Store build), a small subset of devices report DCAppAttestService.isSupported == false, preventing App Attest from being enabled. Approx. impact: 0.23% (352/153,791) iOS observed: Broadly 15.x–18.7 (also saw a few anomalous entries ios/26.0, likely client logging noise) Device models: Multiple generations (iPhone8–iPhone17); a few iPad7 entries present although the app targets iPhone Questions In iPhone main app context, what conditions can make isSupported return false on iOS 14+? Are there known device/iOS cases where temporary false can occur (SEP/TrustChain related)? Any recommended remediation (e.g., DFU restore)? Could you share logging guidance (Console.app subsystem/keywords) to investigate such cases? What fallback policy do you recommend when isSupported == false (e.g., SE-backed signature + DeviceCheck + risk rules), and any limitations? We can provide sysdiagnose/Console logs and more case details upon request. Thank you, —
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202
Oct ’25
Where to add the apple-app-site-association files for web-credential capability - Domain or subdomain?
I want to implement webauthn using WKWebView for my mac application. I want to host the asaa file in the rpid. Below are my site configuration - Main domain - example.com Subdomain which has the sign-in view and where webauthn kicks in - signin.example.com RPID - example.com Where shall i host the asaa file at domain(example.com) or subdomain(signin.example.com)?
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1.6k
Jan ’25
App Attest Issue in Production - Attestation Object Size Increased
Hi Apple Team and Community, We encountered a sudden and widespread failure related to the App Attest service on Friday, July 25, starting at around 9:22 AM UTC. After an extended investigation, our network engineers noted that the size of the attestation objects received from the attestKey call grew in size notably starting at that time. As a result, our firewall began blocking the requests from our app made to our servers with the Base64-encoded attestation objects in the payload, as these requests began triggering our firewall's max request length rule. Could Apple engineers please confirm whether there was any change rolled out by Apple at or around that time that would cause the attestation object size to increase? Can anyone else confirm seeing this? Any insights from Apple or others would be appreciated to ensure continued stability. Thanks!
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216
Jul ’25
LocalAuthentication (Alternative) in Autofill Credential Provider extension
Hi, how can you authenticate a User through Biometrics with iPhone Passcode as Fallback in the Autofill Credential Provider Extension? In the App it works without a problem. In the Extension I get "Caller is not running foreground" Yeah, it isn't, as it's just a sheet above e.g. Safari. I'd like to avoid having the user setup a Passcode dedicated to my App, especially because FaceID is way faster. Does anybody know how to achieve iOS native Auth in the extension? Please let me know, a code sample would be appreciated. Regards, Mia
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313
Mar ’25
Protecting XPC service when called from Authorisation Plugin
I have Authorisation Plugin which talks using XPC to my Launch Daemon to perform privileged actions. I want to protect my XPC service narrowing it to be called from known trusted clients. Now since I want authorisation plugin code which is from apple to call my service, I cannot use my own team id or app group here. I am currently banking on following properties of client connection. Apple Team ID : EQHXZ8M8AV Bundle ID starting with com.apple. Client signature verified By Apple. This is what I have come up with. func isClientTrusted(connection: NSXPCConnection) -> Bool { let clientPID = connection.processIdentifier logInfo("🔍 Checking XPC Client - PID: \(clientPID)") var secCode: SecCode? var secStaticCode: SecStaticCode? let attributes = [kSecGuestAttributePid: clientPID] as NSDictionary let status = SecCodeCopyGuestWithAttributes(nil, attributes, [], &secCode) guard status == errSecSuccess, let code = secCode else { logInfo("Failed to get SecCode for PID \(clientPID)") return false } let staticStatus = SecCodeCopyStaticCode(code, [], &secStaticCode) guard staticStatus == errSecSuccess, let staticCode = secStaticCode else { logInfo("Failed to get SecStaticCode") return false } var signingInfo: CFDictionary? let signingStatus = SecCodeCopySigningInformation(staticCode, SecCSFlags(rawValue: kSecCSSigningInformation), &signingInfo) guard signingStatus == errSecSuccess, let info = signingInfo as? [String: Any] else { logInfo("Failed to retrieve signing info") return false } // Extract and Verify Team ID if let teamID = info["teamid"] as? String { logInfo("XPC Client Team ID: \(teamID)") if teamID != "EQHXZ8M8AV" { // Apple's official Team ID logInfo("Client is NOT signed by Apple") return false } } else { logInfo("Failed to retrieve Team ID") return false } // Verify Bundle ID Starts with "com.apple." if let bundleID = info["identifier"] as? String { logInfo("XPC Client Bundle ID: \(bundleID)") if !bundleID.hasPrefix("com.apple.") { logInfo("Client is NOT an Apple system process") return false } } else { logInfo("Failed to retrieve Bundle Identifier") return false } // Verify Apple Code Signature Trust var trustRequirement: SecRequirement? let trustStatus = SecRequirementCreateWithString("anchor apple" as CFString, [], &trustRequirement) guard trustStatus == errSecSuccess, let trust = trustRequirement else { logInfo("Failed to create trust requirement") return false } let verifyStatus = SecStaticCodeCheckValidity(staticCode, [], trust) if verifyStatus != errSecSuccess { logInfo("Client's signature is NOT trusted by Apple") return false } logInfo("Client is fully verified as Apple-trusted") return true } Q: Just wanted community feedback, is this correct approach?
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172
Mar ’25
How to request permission for System Audio Recording Only?
Hi community, I'm wondering how can I request the permission of "System Audio Recording Only" under the Privacy & Security -> Screen & System Audio Recording via swift? Did a bunch of search but didn't find good documentation on it. Tried another approach here https://github.com/insidegui/AudioCap/blob/main/AudioCap/ProcessTap/AudioRecordingPermission.swift which doesn't work very reliably.
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725
May ’25
com.apple.devicecheck.error - 3: Error Domain=com.apple.devicecheck.error Code=3 "(null)"
Hi, In our app we are using DeviceCheck (App Attest) in a production environment iOS. The service works correctly for most users, but a user reported failure in a flow that use device check service. This failure is not intermittently, it is constant. We are unable to reproduce this failure and we are believing that this failure occurred by new version ios 26.3 because for others users using early versions the service is normally. Environment iOS 26.3 Real device App Attest capability enabled Correct App ID, Team ID and App Attest entitlement Production environment Characteristics: appears constantly affects only unique user -Don't resolves after time or reinstall not reproducible on our test devices NSError contains no additional diagnostic info (Error Domain=com.apple.devicecheck.error Code=3 "(null)") We saw about this error code 3 in this post 812308, but it's not our case because the ios version in this case is not iOS 17.0 or earlier. Please, help us any guidance for solution. Thank you
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2d
Regression: QuickLookAR shares USDZ file instead of source URL on iOS 26
On iOS 26, QuickLookAR (ARQuickLookPreviewItem) shares the actual .usdz file via the system Share Sheet instead of the original website URL. This is a regression from iOS 17–18, where sharing correctly preserved and sent only the source URL. Repro steps: 1. Open a web-hosted USDZ model in QuickLookAR (Safari). 2. Tap Share. 3. Share via any messenger. 4. The full .usdz file is sent. Expected: Share Sheet sends only the original URL. Actual: Share Sheet sends the USDZ file. Impact: Uncontrolled distribution of proprietary 3D assets. Critical IP / data leak. Blocks production AR deployments relying on QuickLook. Environment: iOS 26.0–26.1, iPhone 14 / 15. Works as expected on iOS 17–18. Test case: https://admixreality.com/ios26/
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568
1w
Need help in adding our Mac application under Remote Desktop setting from code
Our application uses Screen capture KIT API for screen recording. But from Sequoia OS, we are getting additional permission dialog which states " is requesting to bypass the system private window picker and directly access your screen and audio". It seems we need to add our app under "System settings -> Privacy & Security -> Remote Desktop" setting to avoid getting above additional dialogue in every few days. Some places mention use of .plist file that if mention in this file, the app will request for this permission. But did not seem to work or we do not understand that properly yet.
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311
Feb ’25
Title: MAS Sandbox Quarantine Flag Issue - Plugins Marked "Corrupt" by Host App
I've made my first app and encountered an unexpected (potentially existential) issue. The Manager app is designed to tag 3rd party "plugins" used by a DAW, storing metadata in a local SQLite database, and move them between Active and Inactive folders. This allows management of the plugin collection - the DAW only uses what's in the Active folder. Permissions are obtained via security-scoped bookmarks on first launch. The app functions as intended: plugin bundles move correctly and the database tracks everything. No information is written to the plugins themselves. The Problem:
When moving plugins using fs.rename() , the MAS sandbox automatically adds the com.apple.quarantine extended attribute to moved files. When the DAW subsequently rebuilds its plugin cache, it interprets quarantined plugins as "corrupt" or potentially malicious and refuses to load them. Technical Details: Moving files with NSFileManager or Node.js fs APIs within sandbox triggers quarantine Sandboxed apps cannot call xattr -d com.apple.quarantine or use removexattr() The entitlement com.apple.security.files.user-selected.read-write doesn't grant xattr removal rights User workaround: run xattr -cr /path/to/plugins in Terminal - not acceptable for professional users Question:
Is there any MAS-compliant way to move files without triggering quarantine, or to remove the quarantine attribute within the sandbox? The hardened-runtime DMG build works perfectly (no sandbox = no quarantine added). Any insight appreciated!
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461
2w
Clarification requested on Secure Enclave key usage across apps with shared keychain access group
During internal testing, we observed the following behavior and would appreciate clarification on whether it is expected and supported in production environments. When generating an elliptic-curve cryptographic key pair using "kSecAttrTokenIDSecureEnclave", and explicitly specifying a "kSecAttrAccessGroup", we found that cryptographic operations (specifically encryption and decryption) could be successfully performed using this key pair from two distinct applications. Both applications had the Keychain Sharing capability enabled and were signed with the same provisioning profile identity. Given the documented security properties of Secure Enclave, backed keys, namely that private key material is protected by hardware and access is strictly constrained by design, we would like to confirm whether the ability for multiple applications (sharing the same keychain access group and signing identity) to perform cryptographic operations with the same Secure Enclave–backed key is expected behavior on iOS. Specifically, we are seeking confirmation on: Whether this behavior is intentional and supported in production. Whether the Secure Enclave enforces access control primarily at the application-identifier (App ID) level rather than the individual app bundle level in this scenario. Whether there are any documented limitations or guarantees regarding cross-application usage of Secure Enclave keys when keychain sharing is configured. Any guidance or references to official documentation clarifying this behavior would be greatly appreciated.
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2w
What personal data is included in iOS storage logs
While I was submitting a new feedback today for an iPhone/iPad storage issue, I saw a new log called “iOS storage log”. I could find no reference to this when I searched online. It made me wonder if it was new and if it contained personal data? Most of us only have one device, with all our personal data. Therefore, I’d appreciate any input on what personal data these logs contain.
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164
Jul ’25
Automatic passkey upgrade not working
Seeing the following error when attempting automatic passkey upgrade - [Warning] NotAllowedError: The request is not allowed by the user agent or the platform in the current context, possibly because the user denied permission. We're trying to enable Automatic passkey upgrade (https://developer.apple.com/videos/play/wwdc2024/10125/?time=38) for our website but it's not working from our testing on iOS 18.2 and 18.3 Beta Safari. The flow on our website looks like: the customers use autofill to fill out email and password on the sign-in page (abc.com/signin) PublicKeyCredential.getClientCapabilities is called to check if conditionalCreate supported. land on another page of our website (abc.com/pageX), which calls navigator.credentials.create with mediation conditional (Right after sign-in). We checked that we followed the steps in above video: Allow automatic passkey upgrades is enabled, mediation is set to conditional and password autofill is used to signed in. However, Safari threw an error [Warning] NotAllowedError: The request is not allowed by the user agent or the platform in the current context, possibly because the user denied permission. Can Apple help guide us if anything is missed here?
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707
Apr ’25
Implementing Password AutoFill on macOS — Looking for Guidance
Hi everyone, I'm currently working on a native macOS app (built with SwiftUI) and I'm trying to implement Password AutoFill functionality so users can use their saved credentials from Keychain or third-party password managers. I've gone through Apple's documentation, WWDC sessions, and sample code, but I've noticed that the resources primarily focus on iOS and web implementations. There's very limited guidance specifically for macOS. I've set up: Associated Domains entitlement with the webcredentials: service The apple-app-site-association file on my server TextField with .textContentType(.username) and SecureField with .textContentType(.password) However, I'm still not seeing the expected AutoFill behavior on macOS like I would on iOS. Has anyone successfully implemented Password AutoFill on a native macOS app? Are there any macOS-specific considerations or additional steps required that differ from iOS? Any guidance, sample code, or pointers to documentation I might have missed would be greatly appreciated.
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290
Dec ’25
Enable Safari autofill from my password manager app
Hello, I have a password manager app and would like to help my user's to enable the Safari autofill capability. I've made the password credential extension and that is working great. I just need to help my user's enable the feature. I could point them to Settings->General->AutoFill & Password and instruct them to turn the feature on. However, I've noticed that my competitors are able to present an alert directly from their app to turn the feature on (without going to settings at all). I can't find any documentation on how to do this? Thanks for your help! //Ray
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129
Apr ’25
How to implement the "Set Up Codes In" feature
Hello, I have a password manager app and have noticed a new feature in AutoFill & Passwords called "Set Up Codes In". I see that my competitors have been able to implement this feature but cannot find any documentation on how to do this. How can I make it so my app can support this feature. Any help to pointing me to the documentation or otherwise would be greatly appreciated. Thanks! //Ray
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97
Apr ’25