diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index d461de1..ab0c799 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -58,3 +58,5 @@ updates:
       all-actions:
         patterns:
           - "*"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/azd-template-validation.yml b/.github/workflows/azd-template-validation.yml
index 905f46f..003ba9e 100644
--- a/.github/workflows/azd-template-validation.yml
+++ b/.github/workflows/azd-template-validation.yml
@@ -18,12 +18,12 @@ jobs:
     env:
       GH_TOKEN: ${{ github.token }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Set timestamp
         run: echo "HHMM=$(date -u +'%H%M')" >> $GITHUB_ENV
 
-      - uses: microsoft/template-validation-action@v0.4.3
+      - uses: microsoft/template-validation-action@9f56864b1ddbfb56dd27f3cbc71a00750cdb9a18 # v0.4.3
         with:
           validateAzd: ${{ vars.TEMPLATE_VALIDATE_AZD }}
           validateTests: ${{ vars.TEMPLATE_VALIDATE_TESTS }}
diff --git a/.github/workflows/azure-dev.yml b/.github/workflows/azure-dev.yml
index 5addfc0..a8ce3de 100644
--- a/.github/workflows/azure-dev.yml
+++ b/.github/workflows/azure-dev.yml
@@ -19,7 +19,7 @@ jobs:
       AZURE_DEV_COLLECT_TELEMETRY: ${{ vars.AZURE_DEV_COLLECT_TELEMETRY }}
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Set timestamp and env name
         shell: bash
@@ -28,10 +28,10 @@ jobs:
           echo "AZURE_ENV_NAME=azd-${{ vars.AZURE_ENV_NAME }}-${HHMM}" >> $GITHUB_ENV
 
       - name: Install azd
-        uses: Azure/setup-azd@v2
+        uses: Azure/setup-azd@634ad924cf8baef2257898ba5663be8d19f15aca # v2.3.0
 
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
diff --git a/.github/workflows/broken-links-checker.yml b/.github/workflows/broken-links-checker.yml
index f791df6..faf2756 100644
--- a/.github/workflows/broken-links-checker.yml
+++ b/.github/workflows/broken-links-checker.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout Repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
         with:
           fetch-depth: 0
 
@@ -34,7 +34,7 @@ jobs:
       - name: Check Broken Links in Changed Markdown Files
         id: lychee-check-pr
         if: github.event_name == 'pull_request' && steps.changed-markdown-files.outputs.any_changed == 'true'
-        uses: lycheeverse/lychee-action@v2.8.0
+        uses: lycheeverse/lychee-action@8646ba30535128ac92d33dfc9133794bfdd9b411 # v2.8.0
         with:
           args: >
             --verbose --no-progress --exclude ^https?:// --exclude ^mailto:
@@ -47,7 +47,7 @@ jobs:
       - name: Check Broken Links in All Markdown Files in Entire Repo (Manual Trigger)
         id: lychee-check-manual
         if: github.event_name == 'workflow_dispatch'
-        uses: lycheeverse/lychee-action@v2.8.0
+        uses: lycheeverse/lychee-action@8646ba30535128ac92d33dfc9133794bfdd9b411 # v2.8.0
         with:
           args: >
             --verbose --no-progress --exclude ^https?:// --exclude ^mailto:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3081a9f..7f80530 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,10 +39,10 @@ jobs:
       DEPLOYMENT_SUCCESS: ${{ steps.deployment_status.outputs.SUCCESS }}
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
@@ -173,7 +173,7 @@ jobs:
       RESOURCE_GROUP_NAME: ${{ needs.deploy.outputs.RESOURCE_GROUP_NAME }}
     steps:
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
diff --git a/.github/workflows/docker-build-and-push.yml b/.github/workflows/docker-build-and-push.yml
index c64748a..bc2d648 100644
--- a/.github/workflows/docker-build-and-push.yml
+++ b/.github/workflows/docker-build-and-push.yml
@@ -32,10 +32,10 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
 
       - name: Get current date
         id: date
@@ -43,7 +43,7 @@ jobs:
 
       - name: Login to Azure
         if: ${{ (github.event_name == 'push' && (github.ref_name == 'main' || github.ref_name == 'dev' || github.ref_name == 'demo')) || (github.event_name == 'workflow_dispatch' && (github.ref_name == 'dependabotchanges'||github.ref_name == 'main' || github.ref_name == 'dev' || github.ref_name == 'demo')) }}
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
@@ -87,7 +87,7 @@ jobs:
           echo "Base tag: $BASE_TAG, Date tag: $DATE_TAG"
 
       - name: Build and Push Backend API Docker image
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         with:
           context: ./src/backend-api
           file: ./src/backend-api/Dockerfile
@@ -98,7 +98,7 @@ jobs:
             ${{ steps.registry.outputs.ext_registry }}/backend-api:${{ env.DATE_TAG }}
 
       - name: Build and Push Processor Docker image
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         with:
           context: ./src/processor
           file: ./src/processor/Dockerfile
@@ -109,7 +109,7 @@ jobs:
             ${{ steps.registry.outputs.ext_registry }}/processor:${{ env.DATE_TAG }}
             
       - name: Build and Push Frontend Docker image
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         with:
           context: ./src/frontend
           file: ./src/frontend/Dockerfile
diff --git a/.github/workflows/job-cleanup-deployment.yml b/.github/workflows/job-cleanup-deployment.yml
index 8817efe..b31e54b 100644
--- a/.github/workflows/job-cleanup-deployment.yml
+++ b/.github/workflows/job-cleanup-deployment.yml
@@ -181,13 +181,13 @@ jobs:
           echo "✅ All input parameters validated successfully!"
 
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Setup Azure Developer CLI
-        uses: Azure/setup-azd@v2
+        uses: Azure/setup-azd@634ad924cf8baef2257898ba5663be8d19f15aca # v2.3.0
 
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
diff --git a/.github/workflows/job-deploy-linux.yml b/.github/workflows/job-deploy-linux.yml
index 0dc9d2b..4b983be 100644
--- a/.github/workflows/job-deploy-linux.yml
+++ b/.github/workflows/job-deploy-linux.yml
@@ -187,7 +187,7 @@ jobs:
           echo "✅ All input parameters validated successfully!"
           
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
       
       - name: Configure Parameters Based on WAF Setting
         shell: bash
@@ -218,10 +218,10 @@ jobs:
           fi
 
       - name: Install azd
-        uses: Azure/setup-azd@v2
+        uses: Azure/setup-azd@634ad924cf8baef2257898ba5663be8d19f15aca # v2.3.0
           
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
diff --git a/.github/workflows/job-deploy-windows.yml b/.github/workflows/job-deploy-windows.yml
index c3106be..314904f 100644
--- a/.github/workflows/job-deploy-windows.yml
+++ b/.github/workflows/job-deploy-windows.yml
@@ -187,7 +187,7 @@ jobs:
           echo "✅ All input parameters validated successfully!"
 
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Configure Parameters Based on WAF Setting
         shell: bash
@@ -218,10 +218,10 @@ jobs:
           fi
 
       - name: Setup Azure Developer CLI (Windows)
-        uses: Azure/setup-azd@v2
+        uses: Azure/setup-azd@634ad924cf8baef2257898ba5663be8d19f15aca # v2.3.0
 
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
diff --git a/.github/workflows/job-deploy.yml b/.github/workflows/job-deploy.yml
index f9cd652..659da68 100644
--- a/.github/workflows/job-deploy.yml
+++ b/.github/workflows/job-deploy.yml
@@ -315,10 +315,10 @@ jobs:
           echo "Final EXP status: $EXP_ENABLED"
           
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
diff --git a/.github/workflows/job-docker-build.yml b/.github/workflows/job-docker-build.yml
index f05d7eb..118cebc 100644
--- a/.github/workflows/job-docker-build.yml
+++ b/.github/workflows/job-docker-build.yml
@@ -23,7 +23,7 @@ jobs:
       IMAGE_TAG: ${{ steps.generate_docker_tag.outputs.IMAGE_TAG }}
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Generate Unique Docker Image Tag
         id: generate_docker_tag
@@ -40,10 +40,10 @@ jobs:
           echo "Generated unique Docker tag: $UNIQUE_TAG"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
 
       - name: Login to Azure
-        uses: azure/login@v2
+        uses: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5 # v2.3.0
         with:
           client-id: ${{ secrets.AZURE_CLIENT_ID }}
           tenant-id: ${{ secrets.AZURE_TENANT_ID }}
@@ -58,7 +58,7 @@ jobs:
 
       - name: Build and Push Backend API Docker Image
         id: build_push_image
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         env:
           DOCKER_BUILD_SUMMARY: false
         with:
@@ -71,7 +71,7 @@ jobs:
             ${{ vars.ACR_TEST_LOGIN_SERVER }}/backend-api:${{ steps.generate_docker_tag.outputs.IMAGE_TAG }}_${{ github.run_number }}
 
       - name: Build and Push Processor Docker Image
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         env:
           DOCKER_BUILD_SUMMARY: false
         with:
@@ -84,7 +84,7 @@ jobs:
             ${{ vars.ACR_TEST_LOGIN_SERVER }}/processor:${{ steps.generate_docker_tag.outputs.IMAGE_TAG }}_${{ github.run_number }}
       
       - name: Build and Push Front End Docker Image
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         env:
           DOCKER_BUILD_SUMMARY: false
         with:
diff --git a/.github/workflows/pr-title-checker.yml b/.github/workflows/pr-title-checker.yml
index 842cf67..851d554 100644
--- a/.github/workflows/pr-title-checker.yml
+++ b/.github/workflows/pr-title-checker.yml
@@ -17,6 +17,6 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event_name != 'merge_group' }}
     steps:
-      - uses: amannn/action-semantic-pull-request@v6
+      - uses: amannn/action-semantic-pull-request@48f256284bd46cdaab1048c3721360e808335d50 # v6.1.1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/pylint.yml b/.github/workflows/pylint.yml
index 58e248f..993a86a 100644
--- a/.github/workflows/pylint.yml
+++ b/.github/workflows/pylint.yml
@@ -22,11 +22,11 @@ jobs:
     steps:
       # Step 1: Checkout code
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       # Step 2: Set up Python environment
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
         with:
           python-version: ${{ matrix.python-version }}
           
diff --git a/.github/workflows/stale-bot.yml b/.github/workflows/stale-bot.yml
index ea2d288..516b233 100644
--- a/.github/workflows/stale-bot.yml
+++ b/.github/workflows/stale-bot.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Mark Stale Issues and PRs
-        uses: actions/stale@v10
+        uses: actions/stale@1e223db275d687790206a7acac4d1a11bd6fe629 # v10.4.0
         with:
           stale-issue-message: "This issue is stale because it has been open 180 days with no activity. Remove stale label or comment, or it will be closed in 30 days."
           stale-pr-message: "This PR is stale because it has been open 180 days with no activity. Please update or it will be closed in 30 days."
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
         with:
           fetch-depth: 0  # Fetch full history for accurate branch checks
       - name: Fetch All Branches
@@ -75,7 +75,7 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Upload CSV Report of Inactive Branches
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: merged-branches-report
           path: merged_branches_report.csv
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5b603c0..475fca0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -44,10 +44,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
         with:
           python-version: "3.12"
 
@@ -121,10 +121,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
         with:
           python-version: "3.12"
 
diff --git a/.github/workflows/validate-bicep-params.yml b/.github/workflows/validate-bicep-params.yml
index ce0ebcb..d5f9012 100644
--- a/.github/workflows/validate-bicep-params.yml
+++ b/.github/workflows/validate-bicep-params.yml
@@ -24,10 +24,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
         with:
           python-version: '3.11'
 
@@ -63,7 +63,7 @@ jobs:
 
       - name: Upload validation results
         if: always()
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: bicep-validation-results
           path: |