diff --git a/.github/maven_code_review/action.yml b/.github/maven_code_review/action.yml
index f87f2fa3..bc64e682 100644
--- a/.github/maven_code_review/action.yml
+++ b/.github/maven_code_review/action.yml
@@ -38,27 +38,27 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
     - name: Set up JDK
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@b6e674f4b717d7b0ae3baee0fbe79f498905dfde # v1
       with:
         java-version: ${{ inputs.jdk_version }}
 
     - name: Set up Maven
-      uses: stCarolas/setup-maven@v4.5
+      uses: stCarolas/setup-maven@07fbbe97d97ef44336b7382563d66743297e442f # v4.5
       with:
         maven-version: ${{ inputs.maven_version }}
 
     - name: Cache Maven packages
-      uses: actions/cache@v1
+      uses: actions/cache@f5ce41475b483ad7581884324a6eca9f48f8dcc7 # v1
       with:
         path: ~/.m2
         key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
         restore-keys: ${{ runner.os }}-m2
 
     - name: Cache SonarCloud packages
-      uses: actions/cache@v1
+      uses: actions/cache@f5ce41475b483ad7581884324a6eca9f48f8dcc7 # v1
       with:
         path: ~/.sonar-project.properties/cache
         key: ${{ runner.os }}-sonar-project.properties
diff --git a/.github/workflows/anchore.yml b/.github/workflows/anchore.yml
index 802f6267..a6c6c5d9 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@6a89f57882288b3d2f190cda65000eec9e9ebb7c # v2
         if: always()
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/check_pr.yml b/.github/workflows/check_pr.yml
index a2af2df5..99086789 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'
 
@@ -37,7 +37,7 @@ jobs:
     steps:
       - name: Verify PR Labels
         if: ${{ !contains(github.event.pull_request.labels.*.name, 'major') && !contains(github.event.pull_request.labels.*.name, 'minor') && !contains(github.event.pull_request.labels.*.name, 'patch') && !contains(github.event.pull_request.labels.*.name, 'skip') }}
-        uses: actions/github-script@v6.3.3
+        uses: actions/github-script@d556feaca394842dc55e4734bf3bb9f685482fa0 # v6.3.3
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       - name: Formatting
         id: format
@@ -79,7 +79,7 @@ jobs:
         with:
           args: "--set-exit-if-changed"
 
-      - 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 }}
@@ -113,12 +113,12 @@ 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 c0089b29..c9ae6872 100644
--- a/.github/workflows/code_review.yml
+++ b/.github/workflows/code_review.yml
@@ -34,7 +34,7 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/checkout@v2.3.4
+      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f # v2.3.4
       - name: Code Review
         uses: ./.github/maven_code_review
         with:
@@ -99,7 +99,7 @@ jobs:
         run: echo "$GITHUB_CONTEXT"
 
       - 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 5818d785..5549a1d7 100644
--- a/.github/workflows/create_dashboard.yaml
+++ b/.github/workflows/create_dashboard.yaml
@@ -41,7 +41,7 @@ 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: ${{ matrix.product }}/${{ matrix.version }}
diff --git a/.github/workflows/create_dashboard.yml b/.github/workflows/create_dashboard.yml
index 9dcc127b..785a20c9 100644
--- a/.github/workflows/create_dashboard.yml
+++ b/.github/workflows/create_dashboard.yml
@@ -32,7 +32,7 @@ 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: ${{ matrix.product }}
diff --git a/.github/workflows/integration_test.yml b/.github/workflows/integration_test.yml
index 79c16908..a331cdf7 100644
--- a/.github/workflows/integration_test.yml
+++ b/.github/workflows/integration_test.yml
@@ -89,7 +89,7 @@ jobs:
     steps:
       - name: Report Status
         if: always()
-        uses: ravsamhq/notify-slack-action@v2
+        uses: ravsamhq/notify-slack-action@be814b201e233b2dc673608aa46e5447c8ab13f2 # v2
         with:
           status: ${{ needs.integration_test.result }}
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -106,7 +106,7 @@ 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 b039d4f5..2c4cbe2f 100644
--- a/.github/workflows/release_deploy.yml
+++ b/.github/workflows/release_deploy.yml
@@ -55,7 +55,7 @@ jobs:
     steps:
       - name: Get semver
         id: get_semver
-        uses: pagopa/github-actions-template/semver-setup@v1.4.2
+        uses: pagopa/github-actions-template/semver-setup@0018ad6b766a082c35ec88cd9f18de6b54fd59d1 # v1.4.2
 
       - if: ${{ github.event.inputs.environment == null || github.event.inputs.environment == 'dev' }}
         run: echo "ENVIRNOMENT=dev" >> $GITHUB_ENV
@@ -84,7 +84,7 @@ jobs:
     steps:
       - name: Make Release
         id: release
-        uses: pagopa/github-actions-template/maven-release@v1.5.2
+        uses: pagopa/github-actions-template/maven-release@d63ef91b9b1f0021276f0d63dadf42067d0b49f6 # v1.5.2
         with:
           semver: ${{ needs.setup.outputs.semver }}
           github_token: ${{ secrets.BOT_TOKEN_GITHUB }}
@@ -99,7 +99,7 @@ jobs:
     steps:
       - name: Build and Push
         id: semver
-        uses: pagopa/github-actions-template/ghcr-build-push@v1.4.2
+        uses: pagopa/github-actions-template/ghcr-build-push@0018ad6b766a082c35ec88cd9f18de6b54fd59d1 # v1.4.2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           tag: ${{ needs.release.outputs.version }}
@@ -128,7 +128,7 @@ jobs:
     steps:
       - name: Report Status
         if: always()
-        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/Dockerfile b/Dockerfile
index eccd4e8f..026e588e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 ## Stage 1 : build with maven builder image with native capabilities
-FROM quay.io/quarkus/ubi-quarkus-graalvmce-builder-image:22.3-java17 AS build
+FROM quay.io/quarkus/ubi-quarkus-graalvmce-builder-image:22.3-java17@sha256:8daeb1e3f5353bf4cf9ba6052d854c40bc422eb238e67754957bbb4eae19b441 AS build
 COPY --chown=quarkus:quarkus mvnw /code/mvnw
 COPY --chown=quarkus:quarkus .mvn /code/.mvn
 COPY --chown=quarkus:quarkus pom.xml /code/
@@ -39,7 +39,7 @@ RUN mkdir -p /code/target/jmx && \
 RUN chmod 777 /code/jmx_prometheus_javaagent-0.19.0.jar && \
     cp /code/jmx_prometheus_javaagent-0.19.0.jar /code/target/jmx/jmx_prometheus_javaagent-0.19.0.jar
 
-FROM registry.access.redhat.com/ubi8/openjdk-17:1.14
+FROM registry.access.redhat.com/ubi8/openjdk-17:1.14@sha256:79585ca02551ecff9d368905d7ce387232b9fd328256e7a715ae3c4ec7b086d3
 
 ENV LANGUAGE='en_US:en'
 
diff --git a/Dockerfile_integration_test b/Dockerfile_integration_test
index a0c73055..ddf9ff53 100644
--- a/Dockerfile_integration_test
+++ b/Dockerfile_integration_test
@@ -1,5 +1,5 @@
 ## Stage 1 : build with maven builder image with native capabilities
-FROM quay.io/quarkus/ubi-quarkus-graalvmce-builder-image:22.3-java17 AS build
+FROM quay.io/quarkus/ubi-quarkus-graalvmce-builder-image:22.3-java17@sha256:8daeb1e3f5353bf4cf9ba6052d854c40bc422eb238e67754957bbb4eae19b441 AS build
 COPY --chown=quarkus:quarkus mvnw /code/mvnw
 COPY --chown=quarkus:quarkus .mvn /code/.mvn
 COPY --chown=quarkus:quarkus pom.xml /code/
@@ -29,7 +29,7 @@ RUN mkdir -p /code/target/jmx && \
 RUN chmod 777 /code/jmx_prometheus_javaagent-0.19.0.jar && \
     cp /code/jmx_prometheus_javaagent-0.19.0.jar /code/target/jmx/jmx_prometheus_javaagent-0.19.0.jar
 
-FROM registry.access.redhat.com/ubi8/openjdk-17:1.14
+FROM registry.access.redhat.com/ubi8/openjdk-17:1.14@sha256:79585ca02551ecff9d368905d7ce387232b9fd328256e7a715ae3c4ec7b086d3
 
 ENV LANGUAGE='en_US:en'
 
diff --git a/performance-test/docker-compose.yaml b/performance-test/docker-compose.yaml
index c07d21fd..c8c0cf1d 100644
--- a/performance-test/docker-compose.yaml
+++ b/performance-test/docker-compose.yaml
@@ -1,7 +1,7 @@
 version: '3.3'
 services:
   k6:
-    image: grafana/k6
+    image: grafana/k6@sha256:d39047ea6c5981ac0abacec2ea32389f22a7aa68bc8902c08b356cc5dd74aac9
     container_name: k6
     volumes:
       - '${PWD}/src:/scripts'
@@ -15,7 +15,7 @@ services:
       - nginx
 
   nginx:
-    image: nginx
+    image: nginx@sha256:28402db69fec7c17e179ea87882667f1e054391138f77ffaf0c3eb388efc3ffb
     container_name: nginx
     volumes:
       - '${PWD}/nginx/nginx.conf:/etc/nginx/nginx.conf'
diff --git a/performance-test/src/DockerfilePost b/performance-test/src/DockerfilePost
index 3d85f800..150ef24a 100644
--- a/performance-test/src/DockerfilePost
+++ b/performance-test/src/DockerfilePost
@@ -1,5 +1,5 @@
 # specify the node base image with your desired version node:<version>
-FROM node:16
+FROM node:16@sha256:f77a1aef2da8d83e45ec990f45df50f1a286c5fe8bbfb8c6e4246c6389705c0b
 
 WORKDIR /src/node-app
 
diff --git a/performance-test/src/DockerfilePre b/performance-test/src/DockerfilePre
index 06c3abf8..ea315caa 100644
--- a/performance-test/src/DockerfilePre
+++ b/performance-test/src/DockerfilePre
@@ -1,5 +1,5 @@
 # specify the node base image with your desired version node:<version>
-FROM node:16
+FROM node:16@sha256:f77a1aef2da8d83e45ec990f45df50f1a286c5fe8bbfb8c6e4246c6389705c0b
 
 WORKDIR /src/node-app