diff --git a/.pipelines/templates/linux-package-build.yml b/.pipelines/templates/linux-package-build.yml
index 1487455107e..e37d8555533 100644
--- a/.pipelines/templates/linux-package-build.yml
+++ b/.pipelines/templates/linux-package-build.yml
@@ -1,9 +1,8 @@
 parameters:
   unsignedDrop: 'drop_linux_build_linux_x64'
-  signedeDrop: 'drop_linux_sign_linux_x64'
+  signedDrop: 'drop_linux_sign_linux_x64'
   packageType: deb
   jobName: 'deb'
-  signingProfile: 'CP-450779-pgpdetached'
 
 jobs:
 - job: ${{ parameters.jobName }}
@@ -20,6 +19,7 @@ jobs:
     - name: skipNugetSecurityAnalysis
       value: true
     - group: DotNetPrivateBuildAccess
+    - group: certificate_logical_to_actual
     - name: ob_outputDirectory
       value: '$(Build.ArtifactStagingDirectory)/ONEBRANCH_ARTIFACT'
     - name: ob_sdl_binskim_enabled
@@ -34,8 +34,16 @@ jobs:
       value: $(Build.SourcesDirectory)/PowerShell/.config/tsaoptions.json
     - name: ob_sdl_credscan_suppressionsFile
       value: $(Build.SourcesDirectory)/PowerShell/.config/suppress.json
-    - name: SigningProfile
-      value: ${{ parameters.signingProfile }}
+    # PGP signing profile selection: Mariner (Azure Linux) packages ship through
+    # a different distribution channel and must be signed with the Mariner release
+    # key; all other Linux packages use the standard PowerShell Linux key. Both
+    # key codes come from the `certificate_logical_to_actual` variable group.
+    - ${{ if startsWith(parameters.jobName, 'mariner') }}:
+      - name: SigningProfile
+        value: $(pgp_release_cert_id)
+    - ${{ else }}:
+      - name: SigningProfile
+        value: $(pgp_linux_cert_id)
 
   steps:
   - checkout: self
@@ -193,6 +201,13 @@ jobs:
       $pkgPath = Get-ChildItem -Path $(Pipeline.Workspace) -Filter $pkgFilter -Recurse -File | Select-Object -ExpandProperty FullName
       Write-Verbose -Verbose "pkgPath: $pkgPath"
       Copy-Item -Path $pkgPath -Destination '$(ob_outputDirectory)' -Force -Verbose
+
+      if ($pkgPath -like '*.tar.gz') {
+          $entry = & tar -tzvf $pkgPath | Where-Object { $_ -match '\spwsh$' } | Select-Object -First 1
+          if ($entry -notmatch '^-..x') {
+              throw "pwsh is not executable in $pkgPath : $entry"
+          }
+      }
     displayName: 'Copy artifacts to output directory'
     env:
       __DOTNET_RUNTIME_FEED_KEY: $(RUNTIME_SOURCEFEED_KEY)
diff --git a/.pipelines/templates/mac-package-build.yml b/.pipelines/templates/mac-package-build.yml
index 6585773c743..89dab90aa04 100644
--- a/.pipelines/templates/mac-package-build.yml
+++ b/.pipelines/templates/mac-package-build.yml
@@ -22,6 +22,7 @@ jobs:
     - name: skipNugetSecurityAnalysis
       value: true
     - group: DotNetPrivateBuildAccess
+    - group: certificate_logical_to_actual
     - name: ob_outputDirectory
       value: '$(Build.ArtifactStagingDirectory)/ONEBRANCH_ARTIFACT'
     - name: ob_sdl_binskim_enabled
@@ -76,6 +77,14 @@ jobs:
     # Diagnostics is not critical it passes every time it runs
     continueOnError: true
 
+  - pwsh: |
+      $signedDir = "$(Pipeline.Workspace)/CoOrdinatedBuildPipeline/drop_macos_sign_${{ parameters.buildArchitecture }}/Signed-${{ parameters.buildArchitecture }}"
+      Get-ChildItem $signedDir -Recurse -Include 'pwsh', '*.dylib' | ForEach-Object {
+        codesign --verify --deep --strict --verbose=4 $_.FullName
+        if ($LASTEXITCODE -ne 0) { throw "codesign verification failed for $($_.FullName)" }
+      }
+    displayName: 'Verify Apple codesign on signed binaries'
+
   - pwsh: |
       # Add -SkipReleaseChecks as a mitigation to unblock release.
       # macos-10.15 does not allow creating a folder under root. Hence, moving the folder.
@@ -154,11 +163,20 @@ jobs:
 
       foreach($t in $tarPkgPath) {
         $file = $t.FullName
+        $entry = & tar -tzvf $file | Where-Object { $_ -match '\spwsh$' } | Select-Object -First 1
+        if ($entry -notmatch '^-..x') {
+            throw "pwsh is not executable in $file : $entry"
+        }
         Write-Verbose -verbose "Uploading $file to macos-pkgs"
         Write-Host "##vso[artifact.upload containerfolder=macos-pkgs;artifactname=macos-pkgs]$file"
       }
 
+      $packageInfo = Get-MacOSPackageIdentifierInfo -Version '$(Version)' -LTS:$LTS
+      Write-Verbose -Verbose "BundleId: $($packageInfo.PackageIdentifier)"
+      Write-Host "##vso[task.setvariable variable=BundleId;isOutput=true]$($packageInfo.PackageIdentifier)"
+
     displayName: 'Package ${{ parameters.buildArchitecture}}'
+    name: packageStep
     env:
       __DOTNET_RUNTIME_FEED_KEY: $(RUNTIME_SOURCEFEED_KEY)
 
@@ -170,6 +188,7 @@ jobs:
     type: windows
 
   variables:
+  - group: certificate_logical_to_actual
   - name: ob_outputDirectory
     value: '$(Build.ArtifactStagingDirectory)/ONEBRANCH_ARTIFACT'
   - name: ob_sdl_binskim_enabled
@@ -178,7 +197,8 @@ jobs:
     value: $(Build.SourcesDirectory)/PowerShell/.config/suppress.json
   - name: BuildArch
     value: ${{ parameters.buildArchitecture }}
-  - group: mscodehub-macos-package-signing
+  - name: BundleId
+    value: $[ dependencies.package_macOS_${{ parameters.buildArchitecture }}.outputs['packageStep.BundleId'] ]
 
   steps:
   - download: current
@@ -216,32 +236,59 @@ jobs:
       inline_operation: |
         [
           {
-            "KeyCode": "$(KeyCode)",
+            "KeyCode": "$(apple_cert_id)",
             "OperationCode": "MacAppDeveloperSign",
             "ToolName": "sign",
             "ToolVersion": "1.0",
             "Parameters": {
-              "Hardening": "Enable",
-              "OpusInfo": "http://microsoft.com"
+              "Hardening": "--options=runtime"
+            }
+          }
+        ]
+
+  - task: onebranch.pipeline.signing@1
+    displayName: 'OneBranch Notarize Package'
+    inputs:
+      command: 'sign'
+      files_to_sign: '**/*-osx-*.zip'
+      search_root: '$(Pipeline.Workspace)'
+      inline_operation: |
+        [
+          {
+            "KeyCode": "$(apple_cert_id)",
+            "OperationCode": "MacAppNotarize",
+            "ToolName": "sign",
+            "ToolVersion": "1.0",
+            "Parameters": {
+              "BundleId": "$(BundleId)"
             }
           }
         ]
+    timeoutInMinutes: 120
 
   - pwsh: |
       $signedPkg = Get-ChildItem -Path $(Pipeline.Workspace) -Filter "*osx*.zip" -File
 
+      if (-not (Test-Path $(ob_outputDirectory))) {
+        $null = New-Item -Path $(ob_outputDirectory) -ItemType Directory
+      }
+
+      $expandDir = "$(Pipeline.Workspace)/pkgExpand"
+      $null = New-Item -Path $expandDir -ItemType Directory -Force
+
       $signedPkg | ForEach-Object {
         Write-Verbose -Verbose "Signed package zip: $_"
+        Expand-Archive -Path $_ -DestinationPath $expandDir -Verbose
+      }
 
-        if (-not (Test-Path $_)) {
-          throw "Package not found: $_"
-        }
-
-        if (-not (Test-Path $(ob_outputDirectory))) {
-          $null = New-Item -Path $(ob_outputDirectory) -ItemType Directory
-        }
+      # ESRP's signing pipeline nests the PKG inside a '<hash>.zip.unzipped' subfolder
+      $pkgFile = Get-ChildItem -Path $expandDir -Filter '*.pkg' -Recurse -File
+      if (-not $pkgFile) {
+        throw "Package not found in: $signedPkg"
+      }
 
-        Expand-Archive -Path $_ -DestinationPath $(ob_outputDirectory) -Verbose
+      $pkgFile | ForEach-Object {
+        Move-Item -Path $_ -Destination $(ob_outputDirectory) -Verbose
       }
 
       Write-Verbose -Verbose "Expanded pkg file:"
diff --git a/.pipelines/templates/mac.yml b/.pipelines/templates/mac.yml
index cb82a7bf4c0..cd492994617 100644
--- a/.pipelines/templates/mac.yml
+++ b/.pipelines/templates/mac.yml
@@ -152,4 +152,36 @@ jobs:
       binPath: $(DropRootPath)
       OfficialBuild: $(ps_official_build)
 
+  # Apple-sign the Mach-O binaries inside the signed output.
+  - pwsh: |
+      $signedDir = "$(ob_outputDirectory)/Signed-$(Runtime)"
+      $zipFile = "$(Pipeline.Workspace)/macho-$(BuildArchitecture).zip"
+      Compress-Archive -Path "$signedDir/*" -DestinationPath $zipFile -Force
+    displayName: Compress signed folder for Apple signing
+
+  - task: onebranch.pipeline.signing@1
+    displayName: Apple CodeSign Mach-O binaries
+    inputs:
+      command: 'sign'
+      files_to_sign: 'macho-$(BuildArchitecture).zip'
+      search_root: '$(Pipeline.Workspace)'
+      inline_operation: |
+        [
+          {
+            "KeyCode": "$(apple_cert_id)",
+            "OperationCode": "MacAppDeveloperSign",
+            "ToolName": "sign",
+            "ToolVersion": "1.0",
+            "Parameters": {
+              "Hardening": "--options=runtime"
+            }
+          }
+        ]
+
+  - pwsh: |
+      $signedDir = "$(ob_outputDirectory)/Signed-$(Runtime)"
+      $zipFile = "$(Pipeline.Workspace)/macho-$(BuildArchitecture).zip"
+      Expand-Archive -Path $zipFile -DestinationPath $signedDir -Force -Verbose
+    displayName: Expand Apple-signed Mach-O binaries into signed output
+
   - template: /.pipelines/templates/step/finalize.yml@self
diff --git a/.pipelines/templates/nupkg.yml b/.pipelines/templates/nupkg.yml
index 3558c949402..c77b3a285c7 100644
--- a/.pipelines/templates/nupkg.yml
+++ b/.pipelines/templates/nupkg.yml
@@ -23,6 +23,7 @@ jobs:
     - group: mscodehub-feed-read-general
     - group: mscodehub-feed-read-akv
     - group: DotNetPrivateBuildAccess
+    - group: certificate_logical_to_actual
 
   steps:
   - checkout: self
@@ -208,7 +209,7 @@ jobs:
     displayName: Sign nupkg files
     inputs:
       command: 'sign'
-      cp_code: 'CP-401405'
+      cp_code: '$(nuget_cert_id)'
       files_to_sign: '**\*.nupkg'
       search_root: '$(Pipeline.Workspace)\nupkg'
 
@@ -268,7 +269,7 @@ jobs:
     displayName: Sign nupkg files
     inputs:
       command: 'sign'
-      cp_code: 'CP-401405'
+      cp_code: '$(nuget_cert_id)'
       files_to_sign: '**\*.nupkg'
       search_root: '$(Pipeline.Workspace)\globaltools'
 
diff --git a/.pipelines/templates/shouldSign.yml b/.pipelines/templates/shouldSign.yml
index 551297f3aaa..f3701acbc97 100644
--- a/.pipelines/templates/shouldSign.yml
+++ b/.pipelines/templates/shouldSign.yml
@@ -6,11 +6,11 @@ parameters:
 steps:
 - powershell: |
     $shouldSign = $true
-    $authenticodeCert = 'CP-230012'
-    $msixCert = 'CP-230012'
+    $authenticodeCert = '$(authenticode_cert_id)'
+    $msixCert = '$(authenticode_cert_id)'
     if($env:IS_DAILY -eq 'true')
     {
-      $authenticodeCert = 'CP-460906'
+      $authenticodeCert = '$(authenticode_test_cert_id)'
     }
     if($env:SKIP_SIGNING -eq 'Yes')
     {
diff --git a/.pipelines/templates/stages/PowerShell-Packages-Stages.yml b/.pipelines/templates/stages/PowerShell-Packages-Stages.yml
index 285a9035d0a..399d242aa4b 100644
--- a/.pipelines/templates/stages/PowerShell-Packages-Stages.yml
+++ b/.pipelines/templates/stages/PowerShell-Packages-Stages.yml
@@ -100,7 +100,6 @@ stages:
       signedDrop: 'drop_linux_sign_linux_fxd_x64_mariner'
       packageType: rpm-fxdependent  #mariner-x64
       jobName: mariner_x64
-      signingProfile: 'CP-459159-pgpdetached'
 
   - template: /.pipelines/templates/linux-package-build.yml@self
     parameters:
@@ -108,7 +107,6 @@ stages:
       signedDrop: 'drop_linux_sign_linux_fxd_arm64_mariner'
       packageType: rpm-fxdependent-arm64 #mariner-arm64
       jobName: mariner_arm64
-      signingProfile: 'CP-459159-pgpdetached'
 
   - template: /.pipelines/templates/linux-package-build.yml@self
     parameters:
diff --git a/.pipelines/templates/windows-hosted-build.yml b/.pipelines/templates/windows-hosted-build.yml
index 83c6b32cdfd..99f1042b17e 100644
--- a/.pipelines/templates/windows-hosted-build.yml
+++ b/.pipelines/templates/windows-hosted-build.yml
@@ -315,7 +315,7 @@ jobs:
     displayName: Sign nupkg files
     inputs:
       command: 'sign'
-      cp_code: 'CP-401405'
+      cp_code: '$(nuget_cert_id)'
       files_to_sign: '**\*.nupkg'
       search_root: '$(ob_outputDirectory)\globaltool'
     condition: and(succeeded(), eq(variables['Architecture'], 'fxdependent'))
diff --git a/tools/packaging/packaging.psd1 b/tools/packaging/packaging.psd1
index 0053428a481..e5b7fb84dfc 100644
--- a/tools/packaging/packaging.psd1
+++ b/tools/packaging/packaging.psd1
@@ -26,6 +26,7 @@
         'Test-PackageManifest'
         'Update-PSSignedBuildFolder'
         'Test-Bom'
+        'Get-MacOSPackageIdentifierInfo'
     )
     RootModule        = "packaging.psm1"
     RequiredModules   = @("build")
diff --git a/tools/packaging/packaging.psm1 b/tools/packaging/packaging.psm1
index 641299df382..cc8876469bb 100644
--- a/tools/packaging/packaging.psm1
+++ b/tools/packaging/packaging.psm1
@@ -822,6 +822,18 @@ function New-TarballPackage {
     $Staging = "$PSScriptRoot/staging"
     New-StagingFolder -StagingPath $Staging -PackageSourcePath $PackageSourcePath -R2RVerification $R2RVerification
 
+    # Ensure PowerShell executable has correct permissions in tarball
+    $pwshInStaging = Join-Path $Staging 'pwsh'
+    if (Test-Path -LiteralPath $pwshInStaging) {
+        Start-NativeExecution { chmod 755 $pwshInStaging }
+    }
+
+    # Included .NET executable for producing crash dumps
+    $createdumpInStaging = Join-Path $Staging 'createdump'
+    if (Test-Path -LiteralPath $createdumpInStaging) {
+        Start-NativeExecution { chmod 755 $createdumpInStaging }
+    }
+
     if (Get-Command -Name tar -CommandType Application -ErrorAction Ignore) {
         if ($Force -or $PSCmdlet.ShouldProcess("Create tarball package")) {
             $options = "-czf"
@@ -1240,7 +1252,11 @@ function New-UnixPackage {
                 find $Staging -type f | xargs chmod 644
                 chmod 644 $ManGzipInfo.GzipFile
                 # refers to executable, does not vary by channel
-                chmod 755 "$Staging/pwsh" #only the executable file should be granted the execution permission
+                chmod 755 "$Staging/pwsh" # only the executable file should be granted the execution permission
+                # Included .NET executable for producing crash dumps
+                if (Test-Path "$Staging/createdump") {
+                    chmod 755 "$Staging/createdump"
+                }
             }
         }
 
@@ -1920,6 +1936,12 @@ $(if ($extendedDescription) { $extendedDescription + "`n" })
             Start-NativeExecution { chmod 755 $pwshPath }
         }
 
+        # Included .NET executable for producing crash dumps
+        $createdumpPath = "$targetPath/createdump"
+        if (Test-Path $createdumpPath) {
+            Start-NativeExecution { chmod 755 $createdumpPath }
+        }
+
         # Calculate md5sums for all files in data directory (excluding symlinks)
         $md5sumsFile = Join-Path $debianDir "md5sums"
         $md5Content = ""