diff --git a/.github/workflows/build-and-push-docker.yml b/.github/workflows/build-and-push-docker.yml
index cc0edbf..62ebdf6 100644
--- a/.github/workflows/build-and-push-docker.yml
+++ b/.github/workflows/build-and-push-docker.yml
@@ -31,7 +31,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: docker build --tag ${{ inputs.registry }}/${{ inputs.image_name }}:${{ inputs.image_version }} api/
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8a8c77f..c21807d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
     # Reference: https://github.com/swagger-api/swagger-codegen/blob/master/standalone-gen-dev/standalone-generator-development.md
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: API Generation Setup
         run: |
@@ -36,7 +36,7 @@ jobs:
           java -jar ${{ env.SWAGGER_CODEGEN_CLI_LOCAL_JAR }} generate -i ${{ env.SWAGGER_API_FILE }} -l go -o ${{ env.OUT_GO }}
 
       - name: Archive generated GO code
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: go-api
           path: ${{ env.OUT_GO }}
@@ -72,7 +72,7 @@ jobs:
           ls -rotl ${OUT_JAVA}
 
       - name: Archive generated JAVA code
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: java-api
           path: ${{ env.OUT_JAVA }}
@@ -83,7 +83,7 @@ jobs:
           java -jar ${{ env.SWAGGER_CODEGEN_CLI_LOCAL_JAR }} generate -i ${{ env.SWAGGER_API_FILE }} -l nodejs-server -o ${{ env.OUT_NODEJS }}
 
       - name: API Server Implementation - NodeJS
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2
         with:
           python-version: 3.8 #install the python needed
       - name: Overlay NodeJS Server Implementation
@@ -126,7 +126,7 @@ jobs:
       # - name: Generate NPM package details
       #   run: |
       - name: Archive generated NodeJS code
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: nodejs-server
           path: ${{ env.OUT_NODEJS }}
@@ -140,7 +140,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: |
@@ -160,7 +160,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [generate-api-code, docker-API-Builder]
     steps:
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a # v3
 
       - name: List java-api Directory Contents
         run: ls -rotl java-api
@@ -176,7 +176,7 @@ jobs:
           echo "buildRoot=${PWD}" >> $GITHUB_ENV
 
       - name: Publish Java client jar
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: java-client
           path: ${{ env.buildRoot }}/build/libs/*.jar
@@ -192,7 +192,7 @@ jobs:
           echo "targetRoot=${PWD}/target" >> $GITHUB_ENV
 
       - name: Publish packaged Java client jar
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: java-client-package
           path: |
@@ -209,7 +209,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Copy API Definition
         run: cp ${{ env.SWAGGER_API_FILE }} ${{ env.BUILD_DIR }}
@@ -237,7 +237,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: |
@@ -263,7 +263,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: |
@@ -289,7 +289,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: |
@@ -325,7 +325,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: |
@@ -350,7 +350,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: |
@@ -375,7 +375,7 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Build image
         run: |
@@ -393,9 +393,9 @@ jobs:
   build-obsidian-lightswitch-chaincode:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
       - name: Checkout the Obsidian repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
         with:
           repository: mcoblenz/Obsidian
           path: './Obsidian'
@@ -436,7 +436,7 @@ jobs:
           echo "buildRoot=${PWD}" >> $GITHUB_ENV
           popd
       - name: Publish chaincode jar
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: lightswitch-chaincode
           path: |
@@ -453,8 +453,8 @@ jobs:
       packages: write
       contents: read
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/download-artifact@v3
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      - uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a # v3
       - name: Prepare
         run: |
           pushd lightswitch-chaincode/build/libs
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 9f9d230..5f19a86 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -39,11 +39,11 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v2
+        uses: github/codeql-action/init@df329aa0e224a5582af14d153cfb09a2e783e7f9 # v2
         
         with:
           languages: ${{ matrix.language }}
@@ -58,7 +58,7 @@ jobs:
       # Autobuild attempts to build any compiled languages (C/C++, C#, Go, Java, or Swift).
       # If this step fails, then you should remove it and run the build manually (see below)
       - name: Autobuild
-        uses: github/codeql-action/autobuild@v3
+        uses: github/codeql-action/autobuild@faa06bd0c3efe9bf73685e4489e70f0f552edc63 # v3
 
       # Command-line programs to run using the OS shell.
       # See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
@@ -71,7 +71,7 @@ jobs:
       #     ./location_of_script_within_repo/buildscript.sh
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@faa06bd0c3efe9bf73685e4489e70f0f552edc63 # v3
         
         with:
           category: "/language:${{ matrix.language }}"