diff --git a/.github/workflows/anchore.yml b/.github/workflows/anchore.yml
index 1d704444..71d221d8 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: false
           severity-cutoff: "high"
       - name: Upload Anchore Scan Report
-        uses: github/codeql-action/upload-sarif@v2
+        uses: github/codeql-action/upload-sarif@d958b976dc5b990f802df244f2dc5d807113327f # v2
         if: always()
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/check_pr.yml b/.github/workflows/check_pr.yml
index e5c12c45..23481e50 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-v1.json, openapi-v2.json, openapi-node-v1.json, openapi-node-v2.json
         with:
diff --git a/.github/workflows/code_review.yml b/.github/workflows/code_review.yml
index 92cbce1d..68da5909 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@v1.10.4
+        uses: pagopa/github-actions-template/maven-code-review@5a544cfcc87edacde3391e4fb70228194f90ec63 # v1.10.4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           sonar_token: ${{ secrets.SONAR_TOKEN }}
@@ -97,7 +97,7 @@ jobs:
         run: echo "$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/integration_test.yml b/.github/workflows/integration_test.yml
index 8a56abb8..414edbef 100644
--- a/.github/workflows/integration_test.yml
+++ b/.github/workflows/integration_test.yml
@@ -72,7 +72,7 @@ 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: ${{ secrets.GITHUB_TOKEN }}
@@ -94,7 +94,7 @@ jobs:
         run: echo "$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/release_deploy.yml b/.github/workflows/release_deploy.yml
index b44063f1..44348856 100644
--- a/.github/workflows/release_deploy.yml
+++ b/.github/workflows/release_deploy.yml
@@ -100,7 +100,7 @@ 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 }}
@@ -115,7 +115,7 @@ 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' }}
-        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 6e816119..de6e7f31 100644
--- a/.github/workflows/update_code.yml
+++ b/.github/workflows/update_code.yml
@@ -17,13 +17,13 @@ jobs:
     if: ${{ contains(github.event.comment.body, 'update_code') }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
         with:
           ref: ${{ github.ref }}
           token: ${{ secrets.BOT_TOKEN_GITHUB }}
 
       - name: Set up JDK 17
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@b6e674f4b717d7b0ae3baee0fbe79f498905dfde # v1
         with:
           java-version: 17
 
@@ -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/.github/workflows/update_infra.yml b/.github/workflows/update_infra.yml
index ca6b03cf..b152fff1 100644
--- a/.github/workflows/update_infra.yml
+++ b/.github/workflows/update_infra.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       # prepare openapi template for infra repo
       - run: |
diff --git a/performance-test/docker-compose.yaml b/performance-test/docker-compose.yaml
index 4761636a..ff49aeb7 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:c70aaeaa1d9e4758ba5f292b1a0c73269fd949669c0d1042b2b1e18c58f07b82
     container_name: k6
     volumes:
       - '${PWD}/src:/scripts'
@@ -16,7 +16,7 @@ services:
       - nginx
 
   nginx:
-    image: nginx
+    image: nginx@sha256:67682bda769fae1ccf5183192b8daf37b64cae99c6c3302650f6f8bf5f0f95df
     container_name: nginx
     volumes:
       - '${PWD}/nginx/nginx.conf:/etc/nginx/nginx.conf'