General: Forums topic: Privacy & Security Apple Platform Security support document Developer > Security Enabling enhanced security for your app documentation article Creating enhanced security helper extensions documentation article Security Audit Thoughts forums post Cryptography: Forums tags: Security, Apple CryptoKit Security framework documentation Apple CryptoKit framework documentation Common Crypto man pages — For the full list of pages, run: % man -k 3cc For more information about man pages, see Reading UNIX Manual Pages. On Cryptographic Key Formats forums post SecItem attributes for keys forums post CryptoCompatibility sample code Keychain: Forums tags: Security Security > Keychain Items documentation TN3137 On Mac keychain APIs and implementations SecItem Fundamentals forums post SecItem Pitfalls and Best Practices forums post Investigating hard-to-reproduce keychain problems forums post App ID Prefix Change and Keychain Access forums post Smart cards and other secure tokens: Forums tag: CryptoTokenKit CryptoTokenKit framework documentation Mac-specific resources: Forums tags: Security Foundation, Security Interface Security Foundation framework documentation Security Interface framework documentation BSD Privilege Escalation on macOS Related: Networking Resources — This covers high-level network security, including HTTPS and TLS. Network Extension Resources — This covers low-level network security, including VPN and content filters. Code Signing Resources Notarisation Resources Trusted Execution Resources — This includes Gatekeeper. App Sandbox Resources Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com"

General: Forums topic: Privacy & Security Privacy Resources Security Resources Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com"

I have an app (currently not released on App Store) which runs on both iOS and macOS. The app has widgets for both iOS and macOS which uses user preference (set in app) into account while showing data. Before upgrading to macOS 15 (until Sonoma) widgets were working fine and app was launching correctly, but after upgrading to macOS 15 Sequoia, every time I launch the app it give popup saying '“Kontest” would like to access data from other apps. Keeping app data separate makes it easier to manage your privacy and security.' and also widgets do not get user preferences and throw the same type of error on Console application when using logging. My App group for both iOS and macOS is 'group.com.xxxxxx.yyyyy'. I am calling it as 'UserDefaults(suiteName: Constants.userDefaultsGroupID)!.bool(forKey: "shouldFetchAllEventsFromCalendar")'. Can anyone tell, what am I doing wrong here?

We have a custom SecurityAgentPlugin that is triggered by multiple authorizationdb entries. Some customers report that the SecurityAgent process takes window focus even though no UI or windows are displayed. Our plugin explicitly ignores the _securityAgent user and does not show any UI for that user. However, in macOS 26.1, it appears that the plugin still causes the SecurityAgent to take focus as soon as it is triggered. Is this a change in macOS 26.1 or a bug? Can we do anything to prevent "focus stealing"?

Hi, I am working on a react native module used for tis connection and I am trying to implement the possibility to use a custom certificate/Private key. I have already implemented on android but on iOS I am getting hard times, we cannot find lots of resources, api is different on macOS and iOS with subtle differences so after having tested SO, chatgpt, ... I am trying here: I even tried to use an internal api since it seems ffmpeg uses it but with no success. I have attached my current code because it does not fit here. to sump up after having inserted cert and private key I try to get a SecIdentityRef but it fails. I assume that it's not enough to simply add certain and private key... // Query for the identity with correct attributes NSDictionary *identityQuery = @{ (__bridge id)kSecClass: (__bridge id)kSecClassIdentity, (__bridge id)kSecMatchLimit: (__bridge id)kSecMatchLimitOne, (__bridge id)kSecReturnRef: @YES, (__bridge id)kSecReturnData: @YES, (__bridge id)kSecAttrLabel: @"My Certificate", //(__bridge id)kSecUseDataProtectionKeychain: @YES }; SecIdentityRef identity = NULL; status = SecItemCopyMatching((__bridge CFDictionaryRef)identityQuery, (CFTypeRef *)&identity); TcpSocketClient.txt SecItemCopyMatching with kSecClassIdentity fails, SecIdentityCreate return NULL... So please help and indicates what I am doing wrong and how I am supposed getting a SecIdentityRef. Thanks

Hi, For some reason all implemented (and working before) App Attest code has stopped working. iOS is unable to get attestation returning "Operations could not be completed. (com.apple.devicecheck.error error 4.) (serverUnavailable)" On https://developer.apple.com/system-status/ I can see green dot but I suspect that infrastructure is not OK. This is happening with multiple of our apps in multiple geographical regions. Can anyone confirm these problems or know whether it is strictly connected to App Attest service availability?

On macOS 26.1 (25B78) I can't give Full Disk Access to sshd-keygen-wrapper. Now my Jenkins jobs do not work because they do not have the permission to execute the necessary scripts. Until macOS 26.1 everything worked fine. I restarted the machine several times and tried to give access from Settings -> Privacy & Security -> Full Disk Access but it just does not work. I tried logging with ssh on the machine and executing a script but again nothing happened.

Since October 3rd, I've stopped receiving responses to the Private Access Tokens challenge. I'm using this link: https://demo-issuer.private-access-tokens.fastly.com/.well-known/token-issuer-directory. I receive tokens from Fastly and return a header to the iOS app, but then I don't receive another authentication request from iOS. The user has automatic verification enabled on their phone. The problem is global and affects all my mobile app users. Has anyone encountered a similar problem and found a solution?

Hello, I am using the prf extension for passkeys that is available since ios 18 and macos15. I am using a fixed, hardcoded prf input when creating or geting the credentials. After creating a passkey, i try to get the credentials and retrieve the prf output, which works great, but i am getting different prf outputs for the same credential and same prf input used in the following scenarios: Logging in directly (platform authenticator) on my macbook/iphone/ipad i get "prf output X" consistently for the 3 devices When i use my iphone/ipad to scan the qr code on my macbook (cross-platform authenticator) i get "prf output Y" consistently with both my ipad and iphone. Is this intended? Is there a way to get deterministic prf output for both platform and cross-platform auth attachements while using the same credential and prf input?

Please excuse my lack of understanding of what are probably fundamental concepts in iOS/iPadOS development but I have searched far and wide for documentation and haven't had much luck so far. I am not sure that what I want to do is even possible with an iPad iPadOS app. Goals: Develop a Swift iPadOS app that can digitally sign a file using a PIV SmartCard/Token (Personal Identity Verification Card): Insert a PIV SmartCard/Token (such as a Yubikey 5Ci) into the lightning port of an iPadOS device iPad (NOT MacOS) Interface with the SmartCard/Token to access the user's PIV certificate/signature and "use it" to sign a file Question 1: How to get the PIV Certificate from SmartCard/Token/Yubikey into iPadOS keychain?   * Do we need to get the PIV certificate into the iOS keychain? Is there another way to interact with a SmartCard directly?   * This should prompt the user for their PIN? Question 2: How to get our Swift app to hook into the event that the SmartCard/Token is inserted into the device and then interface with the user's certificate?   * When is the user prompted to enter their PIN for SmartCard/Token/Yubikey?   * Do we need to use CyrptoTokenKit to interface with a smartcard inserted into the lightning port of an iOS device?

Hello, I’m working on an authorization plugin which allows users to login and unlock their computer with various methods like a FIDO key. I need to add smart cards support to it. If I understand correctly, I need to construct a URLCredential object with the identity from the smart card and pass it to the completion handler of URLSessionDelegate.urlSession(_:didReceive:completionHandler:) method. I’ve read the documentation at Using Cryptographic Assets Stored on a Smart Card, TN3137: On Mac keychain APIs and implementations, and SecItem: Pitfalls and Best Practices and created a simple code that reads the identities from the keychain: CFArrayRef identities = nil; OSStatus status = SecItemCopyMatching((__bridge CFDictionaryRef)@{ (id)kSecClass: (id)kSecClassIdentity, (id)kSecMatchLimit: (id)kSecMatchLimitAll, (id)kSecReturnRef: @YES, }, (CFTypeRef *)&identities); if (status == errSecSuccess && identities) { os_log(OS_LOG_DEFAULT, "Found identities: %{public}ld\n", CFArrayGetCount(identities)); } else { os_log(OS_LOG_DEFAULT, "Error: %{public}ld\n", (long)status); } When I use this code in a simple demo app, it finds my Yubikey identities without problem. When I use it in my authorization plugin, it doesn’t find anything in system.login.console right and finds Yubikey in authenticate right only if I register my plugin as non-,privileged. I tried modifying the query in various ways, in particular by using SecKeychainCopyDomainSearchList with the domain kSecPreferencesDomainDynamic and adding it to the query as kSecMatchSearchList and trying other SecKeychain* methods, but ended up with nothing. I concluded that the identities from a smart card are being added to the data protection keychain rather than to a file based keychain and since I’m working in a privileged context, I won’t be able to get them. If this is indeed the case, could you please advise how to proceed? Thanks in advance.

I have developed a sample app following the example found Updating your app package installer to use the new Service Management API and referring this discussion on XPC Security. The app is working fine, I have used Swift NSXPCConnection in favour of xpc_connection_create_mach_service used in the example. (I am running app directly from Xcode) I am trying to set up security requirements for the client connection using setCodeSigningRequirement on the connection instance. But it fails for even basic requirement connection.setCodeSigningRequirement("anchor apple"). Error is as follows. cannot open file at line 46986 of [554764a6e7] os_unix.c:46986: (0) open(/private/var/db/DetachedSignatures) - Undefined error: 0 xpc_support_check_token: anchor apple error: Error Domain=NSOSStatusErrorDomain Code=-67050 "(null)" status: -67050 I have used codesign -d --verbose=4 /path/to/executable to check the attributes I do get them in the terminal. Other way round, I have tried XPC service provider sending back process id (pid) with each request, and I am probing this id to get attributes using this code which gives all the details. func inspectCodeSignature(ofPIDString pidString: String) { guard let pid = pid_t(pidString) else { print("Invalid PID string: \(pidString)") return } let attributes = [kSecGuestAttributePid: pid] as CFDictionary var codeRef: SecCode? let status = SecCodeCopyGuestWithAttributes(nil, attributes, [], &codeRef) guard status == errSecSuccess, let code = codeRef else { print("Failed to get SecCode for PID \(pid) (status: \(status))") return } var staticCode: SecStaticCode? let staticStatus = SecCodeCopyStaticCode(code, [], &staticCode) guard staticStatus == errSecSuccess, let staticCodeRef = staticCode else { print("Failed to get SecStaticCode (status: \(staticStatus))") return } var infoDict: CFDictionary? if SecCodeCopySigningInformation(staticCodeRef, SecCSFlags(rawValue: kSecCSSigningInformation), &infoDict) == errSecSuccess, let info = infoDict as? [String: Any] { print("🔍 Code Signing Info for PID \(pid):") print("• Identifier: \(info["identifier"] ?? "N/A")") print("• Team ID: \(info["teamid"] ?? "N/A")") if let entitlements = info["entitlements-dict"] as? [String: Any] { print("• Entitlements:") for (key, value) in entitlements { print(" - \(key): \(value)") } } } else { print("Failed to retrieve signing information.") } var requirement: SecRequirement? if SecRequirementCreateWithString("anchor apple" as CFString, [], &requirement) == errSecSuccess, let req = requirement { let result = SecStaticCodeCheckValidity(staticCodeRef, [], req) if result == errSecSuccess { print("Signature is trusted (anchor apple)") } else { print("Signature is NOT trusted by Apple (failed anchor check)") } } var infoDict1: CFDictionary? let signingStatus = SecCodeCopySigningInformation(staticCodeRef, SecCSFlags(rawValue: kSecCSSigningInformation), &infoDict1) guard signingStatus == errSecSuccess, let info = infoDict1 as? [String: Any] else { print("Failed to retrieve signing information.") return } print("🔍 Signing Info for PID \(pid):") for (key, value) in info.sorted(by: { $0.key < $1.key }) { print("• \(key): \(value)") } } If connection.setCodeSigningRequirement does not works I plan to use above logic as backup. Q: Please advise is there some setting required to be enabled or I have to sign code with some flags enabled. Note: My app is not running in a Sandbox or Hardened Runtime, which I want.

I have 2 basic questions related to Launch Constraints: [Q1] Are Launch Constraints supposed to work when SIP is disabled? From what I'm observing, when SIP is disabled, Launch Constraints (e.g. Launch Constraint Parent Process) are not enforced. I can understand that. But it's a bit confusing considering that the stack diagram in the WWDC 2023 session is placing the 'Environment Constraints' block under SIP, not above. Also the documentation only mentions SIP for the 'is-sip-protected' fact. [Q2] Is the SpawnConstraint key in legacy launchd plist files (i.e. inside /Library/Launch(Agents|Daemons)) officially supported? From what I'm seeing, it seems to be working when SIP is enabled. But the WWDC session and the documentation don't really talk about this case.

Problem Statement: Pre-requisite is to generate a PKCS#12 file using openssl 3.x or above. Note: I have created a sample cert, but unable to upload it to this thread. Let me know if there is a different way I can upload. When trying to import a p12 certificate (generated using openssl 3.x) using SecPKCS12Import on MacOS (tried on Ventura, Sonoma, Sequoia). It is failing with the error code: -25264 and error message: MAC verification failed during PKCS12 import (wrong password?). I have tried importing in multiple ways through, Security Framework API (SecPKCS12Import) CLI (security import &lt;cert_name&gt; -k ~/Library/Keychains/login.keychain -P "&lt;password&gt;”) Drag and drop in to the Keychain Application All of them fail to import the p12 cert. RCA: The issues seems to be due to the difference in the MAC algorithm. The MAC algorithm used in the modern certs (by OpenSSL3 is SHA-256) which is not supported by the APPLE’s Security Framework. The keychain seems to be expecting the MAC algorithm to be SHA-1. Workaround: The current workaround is to convert the modern p12 cert to a legacy format (using openssl legacy provider which uses openssl 1.1.x consisting of insecure algorithms) which the SecPKCS12Import API understands. I have created a sample code using references from another similar thread (https://developer.apple.com/forums/thread/723242) from 2023. The steps to compile and execute the sample is mentioned in the same file. PFA the sample code by the name “pkcs12_modern_to_legacy_converter.cpp”. Also PFA a sample certificate which will help reproduce the issue by the name “modern_certificate.p12” whose password is “export”. Questions: Is there a fix on this issue? If yes, pls guide me through it; else, is it expected to be fixed in the future releases? Is there a different way to import the p12 cert which is resistant to the issue? This issue also poses a security concerns on using outdated cryptographic algorithms. Kindly share your thoughts. pkcs12_modern_to_legacy_converter.cpp

Hi. We are writing to report a critical issue we've encountered following the recent release of iOS 26 beta 6. After updating our test devices, we discovered that our application is no longer able to establish HTTPS connections to several of our managed FQDNs. This issue was not present in beta 5 and appears to be a direct result of changes introduced in beta 6. The specific FQDNs that are currently unreachable are: d.socdm.com i.socdm.com tg.scodm.com We have reviewed the official iOS & iPadOS 26 Beta 6 Release Notes, particularly the updates related to TLS. While the notes mention changes, we have confirmed that our servers for all affected FQDNs support TLS 1.2, so we believe they should still be compliant. We have also investigated several of Apple's support documents regarding TLS connection requirements (e.g., HT214774, HT214041), but the information does not seem to apply to our situation, and we are currently unable to identify the root cause of this connection failure. https://support.apple.com/en-us/102028 https://support.apple.com/en-us/103214 Although we hope this issue might be resolved in beta 7 or later, the official release is fast approaching, and this has become a critical concern for us. Could you please provide any advice or insight into what might be causing this issue? Any guidance on potential changes in the networking or security frameworks in beta 6 that could affect TLS connections would be greatly appreciated. We have attached the relevant code snippet that triggers the error, along with the corresponding Xcode logs, for your review. Thank you for your time and assistance. #import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; NSURL *url = [NSURL URLWithString:@"https://i.socdm.com/sdk/js/adg-script-loader-b-stg.js"]; NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:30.0]; [self sendWithRequest:req completionHandler:^(NSData *_Nullable data, NSHTTPURLResponse *_Nonnull response, NSError *_Nullable error) { if (error){ NSLog(@"Error occurred: %@", error.localizedDescription); return; }else{ NSLog(@"Success! Status Code: %ld", (long)response.statusCode); } }]; } - (void) sendWithRequest:(NSMutableURLRequest *)request completionHandler:(void (^ _Nullable)(NSData *_Nullable data, NSHTTPURLResponse *response, NSError *_Nullable error))completionHandler { NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; NSURLSession *session = nil; session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:nil]; NSURLSessionTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { [session finishTasksAndInvalidate]; NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response; if (error) { if (completionHandler) { completionHandler(nil, httpResponse, error); } } else { if (completionHandler) { completionHandler(data, httpResponse, nil); } } }]; [task resume]; } @end error Connection 1: default TLS Trust evaluation failed(-9807) Connection 1: TLS Trust encountered error 3:-9807 Connection 1: encountered error(3:-9807) Task <C50BB081-E1DA-40FF-A1E5-A03A2C4CB733>.<1> HTTP load failed, 0/0 bytes (error code: -1202 [3:-9807]) Task <C50BB081-E1DA-40FF-A1E5-A03A2C4CB733>.<1> finished with error [-1202] Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “i.socdm.com” which could put your confidential information at risk." UserInfo={NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, NSErrorPeerCertificateChainKey=( "<cert(0x10621ca00) s: *.socdm.com i: GlobalSign RSA OV SSL CA 2018>", "<cert(0x106324e00) s: GlobalSign RSA OV SSL CA 2018 i: GlobalSign>" ), NSErrorClientCertificateStateKey=0, NSErrorFailingURLKey=https://i.socdm.com/sdk/js/adg-script-loader-b-stg.js, NSErrorFailingURLStringKey=https://i.socdm.com/sdk/js/adg-script-loader-b-stg.js, NSUnderlyingError=0x1062bf960 {Error Domain=kCFErrorDomainCFNetwork Code=-1202 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, kCFStreamPropertySSLPeerTrust=<SecTrustRef: 0x10609d140>, _kCFNetworkCFStreamSSLErrorOriginalValue=-9807, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9807, kCFStreamPropertySSLPeerCertificates=( "<cert(0x10621ca00) s: *.socdm.com i: GlobalSign RSA OV SSL CA 2018>", "<cert(0x106324e00) s: GlobalSign RSA OV SSL CA 2018 i: GlobalSign>" )}}, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <C50BB081-E1DA-40FF-A1E5-A03A2C4CB733>.<1>" ), _kCFStreamErrorCodeKey=-9807, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <C50BB081-E1DA-40FF-A1E5-A03A2C4CB733>.<1>, NSURLErrorFailingURLPeerTrustErrorKey=<SecTrustRef: 0x10609d140>, NSLocalizedDescription=The certificate for this server is invalid. You might be connecting to a server that is pretending to be “i.socdm.com” which could put your confidential information at risk.} Error occurred: The certificate for this server is invalid. You might be connecting to a server that is pretending to be “i.socdm.com” which could put your confidential information at risk. 折りたたむ

Hello! We have code that extracts macOS Installer package (.pkg, .mpkg) signature information using APIs defined in <xar/xar.h> The code opens the package using ‘xar_open’ API like this. func open(file: String) throws(XarError) { xarfile = xar_open(file, READ) if xarfile == nil { throw .fileOpenError } } This code produces a clang warning in our CI build system when built for macOS 12 and up. 'xar_open' was deprecated in macOS 12.0: xar is a deprecated file format and should not be used. Question #1: What is the appropriate / more preferred way to extract signature information from an Installer package given that xar related APIs are deprecated? We use xar APIs to validate the package signature prior to installation to prevent packagers not signed by our team ID from being installed. Question #2: “xar is a deprecated file format and should not be used.”. Does this phrase refer to the file format that should be avoided or the API that extract signature information? We distribute our product using Developer ID method that using pkg/mpkg formats which I believe internally follow the same structure as xar files. I hope this message does not mean we should rethink the distribution method for our products. Thank you. Filed FB FB17148233 as well.

I now had the second user with 26.2. complaining about a hang in my app. The hang occurs when the first AppleScript for Mail is run. Here is the relevant section from the process analysis in Activity Monitor: + 2443 OSACompile (in OpenScripting) + 52 [0x1b32b30f4] + 2443 SecurityPolicyTestDescriptor (in OpenScripting) + 152 [0x1b32a2284] + 2443 _SecurityPolicyTest(char const*, void const*, unsigned long) (in OpenScripting) + 332 [0x1b32a2118] + 2443 InterpreterSecurity_ScanBuffer (in libInterpreterSecurity.dylib) + 112 [0x28c149304] + 2443 -[InterpreterSecurity scanData:withSourceURL:] (in libInterpreterSecurity.dylib) + 164 [0x28c148db4] + 2443 -[XProtectScan beginAnalysisWithFeedback:] (in XprotectFramework) + 544 [0x1d35a1e58] + 2443 -[XPMalwareEvaluation initWithData:assessmentClass:] (in XprotectFramework) + 92 [0x1d359ada4] + 2443 -[XPMalwareEvaluation initWithRuleString:withExtraRules:withURL:withData:withAssessmentClass:feedback:] (in XprotectFramework) + 36 [0x1d359b2a8] My app is correctly signed and notarised. The first user had to completely uninstall/reinstall the app and the everything worked again. Why does this happen? How can the problem be fixed?

Hi, After enabling the new Enhanced Security capability in Xcode 26, I’m seeing install failures on devices running < iOS 26. Deployment target: iOS 15.0 Capability: Enhanced Security (added via Signing & Capabilities tab) Building to iOS 18 device error - Unable to Install ...Please ensure sure that your app is signed by a valid provisioning profile. It works fine on iOS 26 devices. I’d like to confirm Apple’s intent here: Is this capability formally supported only on iOS 26 and later, and therefore incompatible with earlier OS versions? Or should older systems ignore the entitlement, meaning this behavior might be a bug?

Testing my security agent plugin on Tahoe and find that when unlocking the screen, I now get an extra window that pops up over the SFAuthorizationPluginView that says "macOS You must enter a password to unlock the screen" with a Cancel (enabled) and OK button (disabled). See the attached photo. This is new with Tahoe. When unlocking the screen, I see the standard username and password entry view and I enter my password and click OK. That is when this new view appears. I can only click cancel so there is no way to complete authenticating.

Hi, I was testing the lockdown mode in iOS 16 and would like to know whether we can detect the lockdown mode status using any public API that Apple provides. I really appreciate any help you can provide.

QuickLookAR shares the actual USDZ model instead of the original website URL — critical copyright and data leak issue on iOS 26 Since iOS 26, QuickLookAR (or ARQuickLookPreviewItem) no longer preserves the original web URL when sharing a model. Instead of sending the link to the hosted file, the system directly shares the actual USDZ model file with the recipient. This is a critical regression and a severe breach of intellectual property protection, as it exposes proprietary 3D models that must never be distributed outside of the controlled web environment. In earlier iOS versions (tested up to iOS 18), QuickLookAR correctly handled sharing — the share sheet would send the website link where the model is hosted, not the file itself. Starting with iOS 26, this behavior has changed and completely breaks the intended secure flow for AR experiences. Our project relies on allowing users to view models in AR via QuickLook, without ever transferring the underlying 3D assets. Now, the share operation forces full file sharing, giving end users unrestricted access to the model file, which can be copied, rehosted, or reverse-engineered. This issue critically affects production environments and prevents us from deploying our AR-based solutions. Implement a standard QuickLookAR preview with a USDZ file hosted on your web server (e.g., via ARQuickLookPreviewItem). 2. Open the AR view on iOS 26. 3. Tap the Share icon from QuickLookAR. 4. Send via any messenger (Telegram, WhatsApp, etc.). 5. Observe that the actual .usdz model is sent instead of the original website URL. ⸻ Expected behavior: QuickLookAR should share only the original URL (as in iOS 17–18), not the file itself. This ensures that intellectual property and licensed 3D models remain protected and controlled by the content owner. ⸻ Actual behavior: QuickLookAR shares the entire USDZ file, leaking the model content outside of the intended environment. ⸻ Impact: • Violation of copyright and confidential data policies • Loss of control over proprietary 3D assets • Breaking change for all existing web-based AR integrations • Critical blocker for AR production deployment ⸻ Environment: • iOS 26.0 and 26.1 (tested on iPhone 14, iPhone 15) • Safari + QuickLookAR integration • Works correctly on iOS 17 / iOS 18 ⸻ Notes: This regression appears to have been introduced in the latest iOS 26 system handling of QuickLookAR sharing. Please escalate this issue to the ARKit / QuickLook engineering team as it directly affects compliance, IP protection, and usability of AR features across production applications. Additional Notes / Verification: Please test this behavior yourself using the CheckAR test model on my website: https://admixreality.com/ios26/ • If the login page appears, click “Check AR” and then “View in Your Space”. • On iOS 18 and earlier, sharing correctly sends the website URL. • On iOS 26, sharing sends the actual USDZ model file. This clearly demonstrates the regression and the security/IP issue.

I had the following code in a program that I used to encrypt some important files. I haven't run it in a few years. It used to work, and now it seems the password is mysteriously gone from my Keychain! The return value is now errSecItemNotFound. I'm upset with myself for not backing up the key/password somewhere else. Is there anywhere this could be hiding? Did Apple move it somewhere? I know they created this "Passwords" app in recent years, but I don't see anything in there with the "account" string I used. I run the app from Xcode, so maybe it is in the "container" data somewhere? I do see keychain files under ~/Library. Maybe there is a way to look through old Time Machine backups. Ug. So stressful. Just looking for pointers on where the data might be, and why it might have disappeared. Unfortunately it was not a "guessable" password, it was a generated 256 bit key, base64 encoded. Perhaps I could crack that with brute force if I'm determined enough... public static func queryGenericPasswordAsString(account: String) throws -> String { let query: [String: Any] = [kSecClass as String: kSecClassGenericPassword, kSecMatchLimit as String: kSecMatchLimitOne, kSecAttrAccount as String: account, kSecReturnAttributes as String: true, kSecReturnData as String: true] var item: CFTypeRef? let status = SecItemCopyMatching(query as CFDictionary, &item) guard status != errSecItemNotFound else { throw KeychainError.noPassword } ... }