Note: This failure occurs even when running on the same machine that performed the build, signing, and notarization steps. We are developing a command-line Endpoint Security (ES) client for macOS, distributed to customers as part of an enterprise security suite. We have a valid Apple Developer Team ID (redacted for privacy) and have requested and received the Endpoint Security entitlement for our account. What We’ve Done Built a universal (x86_64/arm64) CLI ES client using Xcode on macOS Sonoma. Signed with a Developer ID Application certificate (matching our Team ID). Applied the entitlement: com.apple.developer.endpoint-security.client. Notarized the binary via notarytool after receiving Apple’s confirmation that the entitlement was “assigned to our account.” Distributed and unzipped the notarized ZIP (with com.apple.quarantine xattr intact). What Happens: When we run the binary (as root, via sudo) on any test Mac—including the original build/notarization machine—the process is killed immediately at launch. Kernel log (log stream --predicate 'eventMessage CONTAINS "AMFI"' --info) shows: AMFI: code signature validation failed. AMFI: bailing out because of restricted entitlements. AMFI: When validating /path/to/fidelisevents: Code has restricted entitlements, but the validation of its code signature failed. Unsatisfied Entitlements: What We’ve Verified: codesign -dvvv --entitlements :- ./fidelisevents shows the correct entitlement, team identifier, and certificate. xattr ./fidelisevents shows both com.apple.provenance and com.apple.quarantine. spctl -a -vv ./fidelisevents returns: rejected (the code is valid but does not seem to be an app) origin=Developer ID Application: [REDACTED] The process is killed even if run on the same Mac where build/sign/notarization occurred. Other Details The entitlement approval email from Apple simply says it is “assigned to your account” and does not mention “production” or “distribution.” We have rebuilt, re-signed, and re-notarized after receiving the email. This occurs on both Apple Silicon and Intel Macs, with recent macOS versions (Sonoma, Ventura). Question Is it possible that Apple only assigned the development Endpoint Security entitlement, and not the production entitlement required for distributing/running notarized ES clients outside of development? Is there any way to verify the level of entitlement (dev vs. production) associated with our Team ID? What additional steps, if any, are needed to enable the production entitlement so that our binaries can run on customer endpoints without being killed by AMFI? Any advice, experience, or official documentation about production ES entitlement rollout, approval, or troubleshooting would be greatly appreciated! Thanks in advance!

For context, my company develops a data loss prevention (DLP) product. Part of our functionality is the ability to detect sensitive data being pasted into a web browser or cloud-based app. The AppKit release notes for April 2025 document an upcoming “macOS pasteboard privacy” feature, which will presumably ship in macOS 26. Using the user default setting “EnablePasteboardPrivacyDeveloperPreview” documented in the release notes, I tested our agent under macOS 15.5, and encountered a modal alert reading " is trying to access the pasteboard" almost immediately, when the program reads the General pasteboard to scan its contents. Since our product is aimed at enterprise customers (and not individual Mac users), I believed Apple would implement a privacy control setting for this new feature. This would allow our customers to push a configuration profile via MDM, with the “Paste from Other Apps” setting for our application preset to “Allow”, so that they can install our product on their endpoints without manual intervention. Unfortunately, as of macOS 26 beta 4 (25A5316i), there does not seem to be any such setting documented under Device Management — for example in PrivacyPreferencesPolicyControl.Services, which lists a number of similar settings. Without such a setting available, a valuable function of our product will be effectively crippled when macOS 26 is released. Is there such a setting (that I've overlooked)? If not, allow me to urge Apple to find the resources to implement one, so that our customers can preset “Paste from Other Apps” to “Allow” for our application.

I am trying to disable certain paths from Endpoint Security Events using es_mute_path, but this seems to be returning with ES_RETURN_ERROR. I am currently not having 'com.apple.developer.endpoint-security.client' but is disabling SIP to check the same. What is the reason for this behavior ?

I have tried a few different approaches but none of them were 100% reliable. I tried subscribing to the ES_EVENT_TYPE_NOTIFY_SETEXTATTR event to detect when a process sets the kMDItemWhereFroms attribute on a file, but the problem is that any process can set that attribute on any file. For example, I can use the xattr -w com.apple.metadata:kMDItemWhereFroms "https://example.com" SampleFile.txt command into the terminal and that would trigger an ES event. I also tried to listen for the com.apple.quarantine attribute but for some reason my ES client never receives an event for it, also, as with any attribute, this attriubte can be set manually by any process. Is there a recommended/reliable way to have an ES client that detects a file has been downloaded from the internet (.i.e. a remote network)?

Hello, I am having some issues with running an XPC server on an endpoint security and connecting to it from the sandboxed host application. I tried doing the following: setting xpc server in endpoint security extension entitlements: <key>com.apple.developer.endpoint-security.client</key> <true/> <key>com.apple.security.xpc.server</key> <true/> Adding the mach service with the plist: <dict> <key>NSExtension</key> <dict> <key>NSExtensionPointIdentifier</key> <string>com.apple.system-extension-endpoint-security</string> <key>NSExtensionPrincipalClass</key> <string>$(PRODUCT_MODULE_NAME).ESFExtension</string> </dict> <key>NSEndpointSecurityMachServiceName</key> <string>[TEAMID]com.[UNIQUE_ID]</string> </dict> </plist> Putting a mach-lookup in sandboxed host application entitlements <dict> <key>com.apple.security.app-sandbox</key> <true/> <key>com.apple.security.files.user-selected.read-only</key> <true/> <key>com.apple.developer.system-extension.install</key> <true/> <key>com.apple.security.exception.mach-lookup.global-name</key> <array> <string>[TEAMID]com.[UNIQUE_ID]</string> </array> </dict> Creating the server in the system extension using xpc_connection_create_mach_service(_service_name.c_str(), dispatch_get_main_queue(), XPC_CONNECTION_MACH_SERVICE_LISTENER); with _service_name being the same as in the mach-lookup entitlement. And connecting to it in the host app with: xpc_connection_create_mach_service([self.serviceName UTF8String], dispatch_get_main_queue(), 0); My problem is I get an xpc error 159 (sandbox restriction) in the lookup (libxpc.dylib) [com.apple.xpc:connection] [0x600001a7db30] failed to do a bootstrap look-up: xpc_error=[159: Unknown error: 159] I tried putting the sysex and the host app in the same app group, and it didn't help and I also read this is bad practice to have an app group between a sandboxed app and a system extension so I removed it. I tried adding a temporary-exception and with it, the code works properly. I tried with the XPC_CONNECTION_MACH_SERVICE_PRIVILEGED flag but it still didn't work. Is it possible to have an XPC connection between a ES sysex and it's host app? Should the service name have a prefix of the bundle name or does it must have a certain pattern? Do I need to add some capability in the Certificates, Identifiers & Profiles? Thanks for helping.

Hello, As part of developing a DLP system, I need to block input devices upon detection of data leakage. Could you advise if it's possible to temporarily disable the built-in keyboard and camera? Thank you in advance, Pavel

We have a Network Extension system extension implementing NEFilterPacketProvider to inspect all incoming and outgoing network traffic. We also want to monitor socket-level events such as connect(), bind(), and similar, by leveraging the Endpoint Security framework. Does this require developing a separate system extension for Endpoint Security? Additionally, what is the recommended approach for sharing context and data between the Network Extension and the Endpoint Security extensions?

Hello, I am working on app which must prevent attaching any USB devices to Mac due to security. Unfortunately I have not found any direct way to implement such blocking: Looks like IOKit does not allow to block USB (at least in user space) ES_EVENT_TYPE_AUTH_IOKIT_OPEN (Endpoint Security) does not prevent using USB device if I send response ES_AUTH_RESULT_DENY for "AppleUSBHostDeviceUserClient" I have found several similar problems on forum but no any solution: https://developer.apple.com/forums/thread/671193 (https://developer.apple.com/forums/thread/756573 https://developer.apple.com/forums/thread/741051 What is the easiest way to implement such blocking? Thank you in advance!

I download SampleEndpointApp, and config signing&capabilities->team as my developer Id. Xcode created a profile of bundle identifier automatically. However the project build still failed for sign. What's the reason for that? How can I resolve it?

I'm working on a system extension leveraging endpoint security entitlement. However, while in development, is there a way to continue working and testing locally without having the endpoint security entitlement approved or needing the extension signed. I got these errors running a build: Provisioning profile "Mac Team Provisioning Profile: "com.xxxxx.extension" doesn't include the com.apple.developer.endpoint-security.client entitlement.

Will the ES_EVENT_TYPE_NOTIFY_OPEN event be called back when the user has already returned es_respond_flags_result(client, msg, 0, false) in ES_EVENT_TYPE_AUTH_OPEN? I believe the ES_EVENT_TYPE_NOTIFY_OPEN event should not be triggered if the user has already denied the open operation in the ES_EVENT_TYPE_AUTH_OPEN response handler. However, during my testing, ES_EVENT_TYPE_NOTIFY_OPEN was still being called even after I blocked the open process. Is this behavior correct?

We have a launch daemon which can check for team identifier and some other signing information of any application on machine and match it with provided information to confirm the validity of the application/binary. We use SecStaticCodeCreateWithPath to read the signing information of the app/binary which works in most cases. However, for some third party daemon processes, the static code creation fails with error "Operation not permitted". We are having difficult time identifying why static code creation would fail specially when our process is running with root privileges. Can you please help us understand in what scenario can this API fail with this error? Can there be any process or rule which can deny creating static code of a process like endpoint security extensions/daemon? We are using default flags in SecStaticCodeCreateWithPath.

I wrote a simple program to hide the build-in camera by entitlement restriction as DTS suggested in the post: https://developer.apple.com/forums//thread/784511?answerId=839753022#839753022 But the program failed as the error message: Fail to open service: 0xe00002e6: Caller is not entitled to connect to EndpointSecurity. How can I apply for the entitlement to run the program? Is there any other solution to resolve hide build-in camera?

I have written the Transparent App Proxy and can capture the network flow and send it to my local server. I want to avoid any processing on the traffic outgoing from my server and establish a connection with a remote server, but instead of connecting to the remote server, it again gets captured and sent back to my local server. I am not getting any clue on how to ignore these flows originating from my server. Any pointers, API, or mechanisms that will help me?

I am encountering an issue with my application, BloxOneEndpoint.pkg, which includes two services: rc_service_infoblox – Runs as the root user. Controller Application – Runs as a normal user. Although a thread within rc_service_infoblox is running fine and performing its expected tasks, I notice that the service appears as "Not Responding" in Activity Monitor. Despite normal functionality, this status is concerning, as it may indicate some issue to customer. I would appreciate any insights into why this might be happening and how to resolve it. Is there a specific API or mechanism I should use to ensure the service remains in a "Running" state in Activity Monitor? Thank you for your guidance.

Hello! I'm writing a System Extension that is an Endpoint Security client. And I want to Deny/Allow executing some XPC Service processes (using the ES_EVENT_TYPE_AUTH_EXEC event) depending on characteristics of a process that starts the XPC Service. For this purpose, I need an API that could allow me to obtain an execution context of the XPC Service process. I can obtain this information using the "sudo launchctl procinfo <pid>" command (e.g. I can use the "domain = pid/3428" part of the output for this purpose). Also, I know that when the xpcproxy process is started, it gets as the arguments a service name and a pid of the process that requests the service so I can grasp the execution context from xpcproxy launching. But are these ways to obtain this info legitimate?

This is my .entitlements file: Code signing: codesign --sign -vvv --timestamp --options=runtime --force --entitlements ./UES.entitlements -s "Developer ID Application: XXX. (XXXXXXX)" ./UES.app I work fine in the macOS 13.x system, but the "killed" error occurs in macOS11.x. The system log is displayed as follows: (If codesign remove the --entitlements ./UES.entitlements, it will operate normally) 2025-04-21 13:58:27.039638+0800 0xd5941 Default 0x0 149 0 amfid: /Applications/UES.app/Contents/MacOS/UES signature not valid: -67050 2025-04-21 13:58:27.039762+0800 0xd5bbf Default 0x0 0 0 kernel: mac_vnode_check_signature: /Applications/UES.app/Contents/MacOS/UES: code signature validation failed fatally: When validating /Applications/UES.app/Contents/MacOS/UES: 2025-04-21 13:58:27.039815+0800 0xd5bbf Default 0x0 0 0 kernel: proc 29354: load code signature error 4 for file "UES" 2025-04-21 13:58:27.040720+0800 0xd5bc0 Default 0x0 0 0 kernel: (AppleSystemPolicy) ASP: Security policy would not allow process: 29354, /Applications/UES.app/Contents/MacOS/UES 2025-04-21 13:58:27.045974+0800 0xd58be Error 0x0 66405 0 CoreServicesUIAgent: [com.apple.launchservices:uiagent] handle LS launch error: {\n Action = oapp;\n AppMimimumSystemVersion = "10.13";\n AppPath = "/Applications/UES.app";\n ErrorCode = "-10826";\n} 2025-04-21 13:58:39.121619+0800 0xd5941 Default 0x0 149 0 amfid: /Applications/UES.app/Contents/MacOS/UES signature not valid: -67050 2025-04-21 13:58:39.121832+0800 0xd5e0f Default 0x0 0 0 kernel: mac_vnode_check_signature: /Applications/UES.app/Contents/MacOS/UES: code signature validation failed fatally: When validating /Applications/UES.app/Contents/MacOS/UES: 2025-04-21 13:58:39.121861+0800 0xd5e0f Default 0x0 0 0 kernel: proc 29415: load code signature error 4 for file "UES" 2025-04-21 13:58:39.122571+0800 0xd5e10 Default 0x0 0 0 kernel: (AppleSystemPolicy) ASP: Security policy would not allow process: 29415, /Applications/UES.app/Contents/MacOS/UES 2025-04-21 13:58:46.297915+0800 0xd5941 Default 0x0 149 0 amfid: /Applications/UES.app/Contents/MacOS/UES signature not valid: -67050 2025-04-21 13:58:46.298031+0800 0xd5f85 Default 0x0 0 0 kernel: mac_vnode_check_signature: /Applications/UES.app/Contents/MacOS/UES: code signature validation failed fatally: When validating /Applications/UES.app/Contents/MacOS/UES: 2025-04-21 13:58:46.298072+0800 0xd5f85 Default 0x0 0 0 kernel: proc 29485: load code signature error 4 for file "UES" 2025-04-21 13:58:46.300248+0800 0xd5f86 Default 0x0 0 0 kernel: (AppleSystemPolicy) ASP: Security policy would not allow process: 29485, /Applications/UES.app/Contents/MacOS/UES What causes the pattern to be narrow?

I have an XPC server running on macOS and want to perform comprehensive performance and load testing to evaluate its efficiency, responsiveness, and scalability. Specifically, I need to measure factors such as request latency, throughput, and how well it handles concurrent connections under different load conditions. What are the best tools, frameworks, or methodologies for testing an XPC service? Additionally, are there any best practices for simulating real-world usage scenarios and identifying potential bottlenecks?

I have an Electron Application which is hosting Endpoint Security System Extension. Usually I'm uninstalling it by deleting host application from /Applications/ folder. However, after updating multiple of my machines to Sonoma 15.3.2, this uninstallation flow doesn't work anymore. When I delete host app, it shows promt (approximately) "This application is hosting SysEx which will be removed..." After that, application is moved to .trash, however System Extension remains active and visible in System Settings. Host application name is changed to file name (Some Application -> Some Applciation.app) and this entry has no icon for Host App. I would appreciate any assistance on how to fix that or maybe create a bug report.

I have a launch daemon that's using the Endpoint Security framework which also is causing high memory usage (in Activity Monitor memory column shows for example 2GB and Real Memory 11MB) when building a big project in Xcode. Is it some kind of memory caching by the system? leaks -forkCorpse seems to not show any leaks. How can I attach with heap or Instruments without the process being killed with "ENDPOINTSECURITY, Code 2 EndpointSecurity client terminated because it failed to respond to a message before its deadline"?