diff --git a/.github/workflows/make-release.yml b/.github/workflows/make-release.yml
index 812c0e93c4..c5b5a78ee9 100644
--- a/.github/workflows/make-release.yml
+++ b/.github/workflows/make-release.yml
@@ -30,7 +30,7 @@ jobs:
           npm set "//registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}"
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that
diff --git a/.github/workflows/measure-packages-size.yml b/.github/workflows/measure-packages-size.yml
index 58d6c2df3d..e8b15b3480 100644
--- a/.github/workflows/measure-packages-size.yml
+++ b/.github/workflows/measure-packages-size.yml
@@ -31,7 +31,7 @@ jobs:
         with:
           ref: ${{ steps.extract_PR_details.outputs.headSHA }}
       - name: Packages size report
-        uses: flochaz/pkg-size-action@v2.0.0
+        uses: flochaz/pkg-size-action@e41584e9396375027c8a3c68909e3eca55719e47 # v.2.0.0
         with:
           build-command: mkdir dist && npm run package -w packages/logger -w packages/tracer -w packages/metrics -w packages/commons -w packages/parameters && npm run package-bundle -w packages/logger -w packages/tracer -w packages/metrics -w packages/commons -w packages/parameters && bash -c "mv ./packages/*/dist/* dist/" && ls dist
           dist-directory: /dist
diff --git a/.github/workflows/on-merge-to-main.yml b/.github/workflows/on-merge-to-main.yml
index e062ff447f..71567ad1cb 100644
--- a/.github/workflows/on-merge-to-main.yml
+++ b/.github/workflows/on-merge-to-main.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
       - name: Update release draft
-        uses: release-drafter/release-drafter@v5.20.0
+        uses: release-drafter/release-drafter@569eb7ee3a85817ab916c8f8ff03a5bd96c9c83e # v5.23.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   release_label_on_merge:
diff --git a/.github/workflows/on-workflows-push-pr.yml b/.github/workflows/on-workflows-push-pr.yml
new file mode 100644
index 0000000000..8664c52c81
--- /dev/null
+++ b/.github/workflows/on-workflows-push-pr.yml
@@ -0,0 +1,32 @@
+name: Lockdown untrusted workflows
+
+on:
+  push:
+    paths:
+      - ".github/workflows/**"
+  pull_request:
+    paths:
+      - ".github/workflows/**"
+
+jobs:
+  enforce_pinned_workflows:
+    name: Harden Security
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Ensure 3rd party workflows have SHA pinned
+        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@b9ddf6a5153efe6fb94f071c8915175afdce60fa # v2.1.0
+        with:
+          # Trusted GitHub Actions and/or organizations
+          allowlist: |
+            aws-actions/
+            actions/checkout
+            actions/github-script
+            actions/setup-node
+            actions/setup-python
+            actions/upload-artifact
+            actions/download-artifact
+            github/codeql-action/init
+            github/codeql-action/analyze
+            dependabot/fetch-metadata
\ No newline at end of file
diff --git a/.github/workflows/publish_layer.yaml b/.github/workflows/publish_layer.yml
similarity index 98%
rename from .github/workflows/publish_layer.yaml
rename to .github/workflows/publish_layer.yml
index 0f3968dba8..ae5c4bc2c0 100644
--- a/.github/workflows/publish_layer.yaml
+++ b/.github/workflows/publish_layer.yml
@@ -47,7 +47,7 @@ jobs:
           echo "RELEASE_TAG_VERSION=${RELEASE_TAG_VERSION:1}" >> $GITHUB_ENV
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that
diff --git a/.github/workflows/reusable-publish-docs.yml b/.github/workflows/reusable-publish-docs.yml
index 6c1990a0bb..e64d6e92f3 100644
--- a/.github/workflows/reusable-publish-docs.yml
+++ b/.github/workflows/reusable-publish-docs.yml
@@ -50,7 +50,7 @@ jobs:
       # if one of them changes the cache is invalidated/discarded
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           key: 18-cache-utils-node-modules-${{ hashFiles('./package-lock.json') }}
diff --git a/.github/workflows/reusable-run-linting-check-and-unit-tests.yml b/.github/workflows/reusable-run-linting-check-and-unit-tests.yml
index c0280cd34e..1d54928957 100644
--- a/.github/workflows/reusable-run-linting-check-and-unit-tests.yml
+++ b/.github/workflows/reusable-run-linting-check-and-unit-tests.yml
@@ -24,7 +24,7 @@ jobs:
         run: npm i -g npm@next-8
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that
@@ -68,7 +68,7 @@ jobs:
           cache: "npm"
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./examples/${{ matrix.example }}/node_modules"
           # Use the combo between example, name, and SHA-256 hash of all example lock files as cache key.
@@ -98,7 +98,7 @@ jobs:
           cache: "npm"
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that
@@ -133,7 +133,7 @@ jobs:
         run: npm i -g npm@next-8
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that
diff --git a/.github/workflows/reusable_deploy_layer_stack.yml b/.github/workflows/reusable_deploy_layer_stack.yml
index 380c3b22ad..865e0a493f 100644
--- a/.github/workflows/reusable_deploy_layer_stack.yml
+++ b/.github/workflows/reusable_deploy_layer_stack.yml
@@ -62,7 +62,7 @@ jobs:
       - name: checkout
         uses: actions/checkout@v3
       - name: aws credentials
-        uses: aws-actions/configure-aws-credentials@v1
+        uses: aws-actions/configure-aws-credentials@186395a8644e48f35e7b453e8a7128d9a3948296
         with:
           aws-region: ${{ matrix.region }}
           role-to-assume: ${{ secrets.target-account-role }}
@@ -72,7 +72,7 @@ jobs:
           node-version: "18"
       - name: Cache node modules
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that
diff --git a/.github/workflows/run-e2e-tests.yml b/.github/workflows/run-e2e-tests.yml
index ff56739b19..dffe8073c7 100644
--- a/.github/workflows/run-e2e-tests.yml
+++ b/.github/workflows/run-e2e-tests.yml
@@ -52,7 +52,7 @@ jobs:
         # See https://github.com/npm/cli/issues/4475 to see why --foreground-scripts
         run: npm ci --foreground-scripts
       - name: Setup AWS credentials
-        uses: aws-actions/configure-aws-credentials@v1.6.1
+        uses: aws-actions/configure-aws-credentials@186395a8644e48f35e7b453e8a7128d9a3948296
         with:
           role-to-assume: ${{ secrets.AWS_ROLE_ARN_TO_ASSUME }}
           aws-region: eu-west-1
@@ -98,13 +98,13 @@ jobs:
       - name: Setup npm
         run: npm i -g npm@next-8
       - name: "Configure AWS credentials"
-        uses: aws-actions/configure-aws-credentials@v1.6.1
+        uses: aws-actions/configure-aws-credentials@186395a8644e48f35e7b453e8a7128d9a3948296
         with:
           role-to-assume: ${{ secrets.AWS_ROLE_ARN_TO_ASSUME }}
           aws-region: eu-west-1
       - name: Cache node modules for commons
         id: cache-node-modules
-        uses: actions/cache@v3
+        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
         with:
           path: "./node_modules"
           # Use the combo between node version, name, and SHA-256 hash of the lock file as cache key so that