diff --git a/.github/workflows/anchore.yml b/.github/workflows/anchore.yml
index 802f626..cc55f37 100644
--- a/.github/workflows/anchore.yml
+++ b/.github/workflows/anchore.yml
@@ -35,20 +35,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the code
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       - name: Build the Docker image
         run: docker build . --file ${{ env.DOCKERFILE }} --tag localbuild/testimage:latest
 
       - name: Run the Anchore scan action itself with GitHub Advanced Security code scanning integration enabled
-        uses: anchore/scan-action@v3
+        uses: anchore/scan-action@3343887d815d7b07465f6fdcd395bd66508d486a # v3
         with:
           image: "localbuild/testimage:latest"
           acs-report-enable: true
           fail-build: true
           severity-cutoff: "high"
       - name: Upload Anchore Scan Report
-        uses: github/codeql-action/upload-sarif@v2
+        uses: github/codeql-action/upload-sarif@422b177bb3935638109d3175d95e4dbf97066060 # v2
         if: always()
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/check_pr.yml b/.github/workflows/check_pr.yml
index 0763155..639de74 100644
--- a/.github/workflows/check_pr.yml
+++ b/.github/workflows/check_pr.yml
@@ -24,7 +24,7 @@ jobs:
     steps:
       - name: Assign Me
         # You may pin to the exact commit or the version.
-        uses: kentaro-m/auto-assign-action@v1.2.1
+        uses: kentaro-m/auto-assign-action@746a3a558fdd0e061f612ec9f8ff1b8a19c1a115 # v1.2.1
         with:
           configuration-path: '.github/auto_assign.yml'
 
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       - name: Formatting
         id: format
@@ -43,7 +43,7 @@ jobs:
           path: .
           fail-on-changes: false
 
-      - uses: actions/github-script@v6.3.3
+      - uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         if: steps.format.outcome != 'success'
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -77,12 +77,12 @@ jobs:
     runs-on: ubuntu-latest
     name: Check Size
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
         with:
           fetch-depth: 0
 
       - name: Check Size
-        uses: actions/github-script@v6.3.3
+        uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         env:
           IGNORED_FILES: openapi.json, openapi-node.json
         with:
diff --git a/.github/workflows/code_review.yml b/.github/workflows/code_review.yml
index 5055b17..1ddec20 100644
--- a/.github/workflows/code_review.yml
+++ b/.github/workflows/code_review.yml
@@ -35,7 +35,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       - name: Code Review
-        uses: pagopa/github-actions-template/maven-code-review@v1.4.2
+        uses: pagopa/github-actions-template/maven-code-review@0018ad6b766a082c35ec88cd9f18de6b54fd59d1 # v1.4.2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           sonar_token: ${{ secrets.SONAR_TOKEN }}
@@ -89,7 +89,7 @@ jobs:
     if: ${{ always() }}
     steps:
       - name: Delete Previous deployments
-        uses: actions/github-script@v6
+        uses: actions/github-script@d7906e4ad0b1822421a7e6a35d5ca353c962f410 # v6
         env:
           SHA_HEAD: ${{ (github.event_name == 'pull_request' && github.event.pull_request.head.sha) || github.sha}}
         with:
diff --git a/.github/workflows/create_dashboard.yaml b/.github/workflows/create_dashboard.yaml
index 61fa251..9e9b4c2 100644
--- a/.github/workflows/create_dashboard.yaml
+++ b/.github/workflows/create_dashboard.yaml
@@ -38,7 +38,7 @@ jobs:
           persist-credentials: false
 
       # from https://github.com/pagopa/opex-dashboard-azure-action/
-      - uses: pagopa/opex-dashboard-azure-action@v1.1.2
+      - uses: pagopa/opex-dashboard-azure-action@ece3bc2b133be74cabb50aec14cdb9b8051b886f # v1.1.2
         with:
           environment: ${{ matrix.environment }}
           api-name:
@@ -55,7 +55,7 @@ jobs:
     if: ${{ always() }}
     steps:
       - name: Delete Previous deployments
-        uses: actions/github-script@v6
+        uses: actions/github-script@d7906e4ad0b1822421a7e6a35d5ca353c962f410 # v6
         env:
           SHA_HEAD: ${{ (github.event_name == 'pull_request' && github.event.pull_request.head.sha) || github.sha}}
         with:
diff --git a/.github/workflows/integration_test.yml b/.github/workflows/integration_test.yml
index c405e3e..002e641 100644
--- a/.github/workflows/integration_test.yml
+++ b/.github/workflows/integration_test.yml
@@ -70,7 +70,7 @@ jobs:
     steps:
       - name: Report Status
         if: ${{ inputs.notify }}
-        uses: ravsamhq/notify-slack-action@v2
+        uses: ravsamhq/notify-slack-action@be814b201e233b2dc673608aa46e5447c8ab13f2 # v2
         with:
           status: ${{ needs.integration_test.result }}
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -87,7 +87,7 @@ jobs:
     if: ${{ always() }}
     steps:
       - name: Delete Previous deployments
-        uses: actions/github-script@v6
+        uses: actions/github-script@d7906e4ad0b1822421a7e6a35d5ca353c962f410 # v6
         env:
           SHA_HEAD: ${{ (github.event_name == 'pull_request' && github.event.pull_request.head.sha) || github.sha}}
         with:
diff --git a/.github/workflows/release_deploy.yml b/.github/workflows/release_deploy.yml
index 3e53e2c..6a410eb 100644
--- a/.github/workflows/release_deploy.yml
+++ b/.github/workflows/release_deploy.yml
@@ -96,7 +96,7 @@ jobs:
     steps:
       - name: Make Release
         id: release
-        uses: pagopa/github-actions-template/maven-release@v1.5.4
+        uses: pagopa/github-actions-template/maven-release@d91a1fd0b913c9830589be5d86cdb71c90813fae # v1.5.4
         with:
           semver: ${{ needs.setup.outputs.semver }}
           github_token: ${{ secrets.BOT_TOKEN_GITHUB }}
@@ -111,7 +111,7 @@ jobs:
     steps:
       - name: Build and Push
         id: semver
-        uses: pagopa/github-actions-template/ghcr-build-push@v1.5.4
+        uses: pagopa/github-actions-template/ghcr-build-push@d91a1fd0b913c9830589be5d86cdb71c90813fae # v1.5.4
         with:
           branch: ${{ github.ref_name}}
           github_token: ${{ secrets.GITHUB_TOKEN }}
@@ -138,7 +138,7 @@ jobs:
     steps:
       - name: Report Status
         if: ${{ needs.setup.outputs.environment == 'prod' || needs.setup.outputs.environment == 'all'  }}
-        uses: ravsamhq/notify-slack-action@v2
+        uses: ravsamhq/notify-slack-action@be814b201e233b2dc673608aa46e5447c8ab13f2 # v2
         with:
           status: ${{ needs.deploy_aks.result }}
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/update_code.yml b/.github/workflows/update_code.yml
index ed41d83..8b42a43 100644
--- a/.github/workflows/update_code.yml
+++ b/.github/workflows/update_code.yml
@@ -17,7 +17,7 @@ jobs:
     if: ${{ contains(github.event.comment.body, 'update_code') }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
         with:
           token: ${{ secrets.BOT_TOKEN_GITHUB }}
 
@@ -26,7 +26,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@b6e674f4b717d7b0ae3baee0fbe79f498905dfde # v1
         with:
           java-version: 11
 
@@ -58,7 +58,7 @@ jobs:
     if: ${{ always() && contains(needs.*.result, 'failure') }}
     steps:
       - name: Notify if Failure
-        uses: actions/github-script@v6.3.3
+        uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
diff --git a/Dockerfile b/Dockerfile
index ec39e3f..8c2b5dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,13 @@
 #
 # Build
 #
-FROM maven:3.8.4-jdk-11-slim as buildtime
+FROM maven:3.8.4-jdk-11-slim@sha256:04f8e5ba4a6a74fb7f97940bc75ac7340520728d2fb051ecc5c9ecbb9ba28b48 as buildtime
 WORKDIR /build
 COPY . .
 RUN mvn clean package -Dmaven.test.skip=true
 
 
-FROM adoptopenjdk/openjdk11:alpine-jre as builder
+FROM adoptopenjdk/openjdk11:alpine-jre@sha256:1f1b0fd0d2d7af2cbffb08286a8216ff058bbf5af49d271e53a5485b29513dba as builder
 COPY --from=buildtime /build/target/*.jar application.jar
 RUN java -Djarmode=layertools -jar application.jar extract