diff --git a/.github/workflows/Openstack-Rally-Tester.yaml b/.github/workflows/Openstack-Rally-Tester.yaml
index 10bba311..9d8d2301 100644
--- a/.github/workflows/Openstack-Rally-Tester.yaml
+++ b/.github/workflows/Openstack-Rally-Tester.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: Openstack-Rally-Tester
 
 on:
@@ -19,9 +22,9 @@ jobs:
       matrix:
         python-version: ["3.10"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
@@ -37,8 +40,8 @@ jobs:
   shellcheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Run ShellCheck
-        uses: ludeeus/action-shellcheck@master
+        uses: ludeeus/action-shellcheck@00cae500b08a931fb5698e11e79bfbd38e612a38
         with:
           scandir: "./OpenStack-Rally-Tester"
diff --git a/.github/workflows/aq_zombie_finder.yaml b/.github/workflows/aq_zombie_finder.yaml
index 681e283f..ee315da4 100644
--- a/.github/workflows/aq_zombie_finder.yaml
+++ b/.github/workflows/aq_zombie_finder.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: AQ Zombie Finder Unittest
 
 on: 
@@ -19,9 +22,9 @@ jobs:
       matrix:
         python-version: ["3.9"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
diff --git a/.github/workflows/black.yaml b/.github/workflows/black.yaml
index 078058bf..bfc2364e 100644
--- a/.github/workflows/black.yaml
+++ b/.github/workflows/black.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: Black formatter
 
 on: [push, pull_request]
@@ -6,34 +9,34 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Prometheus IP Script
-        uses: psf/black@stable
+        uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9
         with:
           src: "prometheus_ip_script"
 
       - name: Aquilon Zombie Finder
-        uses: psf/black@stable
+        uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9
         with:
           src: "aq_zombie_finder"
 
       - name: DNS Entry Checker
-        uses: psf/black@stable
+        uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9
         with:
           src: "dns_entry_checker"
 
       - name: Word Cloud Generator
-        uses: psf/black@stable
+        uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9
         with:
           src: "word_cloud_generator"
 
       - name: JSM Metric Collection
-        uses: psf/black@stable
+        uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9
         with:
           src: "jsm_metric_collection"
 
       - name: Openstack-Rally-Tester
-        uses: psf/black@stable
+        uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9
         with:
           src: "OpenStack-Rally-Tester"
diff --git a/.github/workflows/chatops.yaml b/.github/workflows/chatops.yaml
index 9dc1cbdb..4e5ec58c 100644
--- a/.github/workflows/chatops.yaml
+++ b/.github/workflows/chatops.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: Linting
 
 on:
@@ -16,7 +19,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Check Terraform
         run: |
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 2bcf5d46..148445ba 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -9,6 +9,9 @@
 # the `language` matrix defined below to confirm you have the correct set of
 # supported CodeQL languages.
 #
+permissions:
+  contents: read
+  
 name: "CodeQL"
 
 on:
@@ -56,11 +59,11 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v4
+      uses: github/codeql-action/init@c10b8064de6f491fea524254123dbe5e09572f13
       with:
         languages: ${{ matrix.language }}
         build-mode: ${{ matrix.build-mode }}
@@ -88,6 +91,6 @@ jobs:
         exit 1
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v4
+      uses: github/codeql-action/analyze@c10b8064de6f491fea524254123dbe5e09572f13
       with:
         category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/dns_entry_checker.yaml b/.github/workflows/dns_entry_checker.yaml
index 3fe95ffe..9ba5a634 100644
--- a/.github/workflows/dns_entry_checker.yaml
+++ b/.github/workflows/dns_entry_checker.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: DNS Entry Checker Unittest
 
 on: 
@@ -19,9 +22,9 @@ jobs:
       matrix:
         python-version: ["3.9"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
diff --git a/.github/workflows/gpu_benchmark.yaml b/.github/workflows/gpu_benchmark.yaml
index da8ccae8..aaa56dbf 100644
--- a/.github/workflows/gpu_benchmark.yaml
+++ b/.github/workflows/gpu_benchmark.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: GPU Benchmark PR
 on:
   push:
@@ -16,8 +19,8 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Run ShellCheck
-        uses: ludeeus/action-shellcheck@master
+        uses: ludeeus/action-shellcheck@00cae500b08a931fb5698e11e79bfbd38e612a38
         with:
           scandir: "./gpu_benchmark"
diff --git a/.github/workflows/iriscast_build.yaml b/.github/workflows/iriscast_build.yaml
index 4c9d62f0..b3d6a49a 100644
--- a/.github/workflows/iriscast_build.yaml
+++ b/.github/workflows/iriscast_build.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: IRISCAST Bump, Build and Release
 
 on:
@@ -22,17 +25,17 @@ jobs:
 
     steps:
       - name: "Setup Github Token"
-        uses: actions/create-github-app-token@v3
+        uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3
         id: app-token
         with:
           app-id: ${{ vars.APP_ID }}
           private-key: ${{ secrets.PRIVATE_KEY }}
       
       - name: Checkout
-        uses: actions/checkout@v4
+        uses:actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses:actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: "3.11"
 
@@ -61,7 +64,7 @@ jobs:
           echo "current-version=$(bump-my-version show current_version)" >> $GITHUB_OUTPUT
       
       - name: Push changes to GitHub
-        uses: ad-m/github-push-action@master
+        uses: ad-m/github-push-action@m4cc74773234f74829a8c21bc4d69dd4be9cfa599
         with:
           github_token: "${{ steps.app-token.outputs.token }}"
           branch: master
@@ -81,7 +84,7 @@ jobs:
 
       - name: Create GitHub Release
         if: steps.bump.outputs.bumped == 'true'
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@b4309332981a82ec1c5618f44dd2e27cc8bfbfda
         with:
           tag_name: iriscasttools-v${{ steps.bump.outputs.current-version }}
           name: iriscasttools-v${{ steps.bump.outputs.current-version }}
diff --git a/.github/workflows/iriscast_unittest.yaml b/.github/workflows/iriscast_unittest.yaml
index febded32..d6bb91a0 100644
--- a/.github/workflows/iriscast_unittest.yaml
+++ b/.github/workflows/iriscast_unittest.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+
 name: IRISCAST Unittest
 
 on:
@@ -26,13 +29,13 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
 
       - name: Navigate to iriscasttools project
         run: cd iriscasttools
 
       - name: Install uv and set the Python version
-        uses: astral-sh/setup-uv@v7
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b
         with:
           python-version: ${{ matrix.python-version }}
 
diff --git a/.github/workflows/jsm_metric_collection.yaml b/.github/workflows/jsm_metric_collection.yaml
index 9c361813..259b1c0f 100644
--- a/.github/workflows/jsm_metric_collection.yaml
+++ b/.github/workflows/jsm_metric_collection.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: DNS Entry Checker Unittest
 
 on: 
@@ -19,9 +22,9 @@ jobs:
       matrix:
         python-version: ["3.9"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
diff --git a/.github/workflows/prometheus_query_to_csv.yaml b/.github/workflows/prometheus_query_to_csv.yaml
index 847f2841..339c98cb 100644
--- a/.github/workflows/prometheus_query_to_csv.yaml
+++ b/.github/workflows/prometheus_query_to_csv.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: Pylint-Tests-Codecov
 
 on:
@@ -19,9 +22,9 @@ jobs:
       matrix:
         python-version: ["3.x"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
@@ -39,7 +42,7 @@ jobs:
         run: cd prometheus_query_to_csv && python3 -m pytest . --cov-report xml:coverage.xml --cov
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de
         with:
           token: ${{secrets.CODECOV_TOKEN}}
           files: ./prometheus_query_to_csv/coverage.xml
diff --git a/.github/workflows/word_cloud_generator.yaml b/.github/workflows/word_cloud_generator.yaml
index 73eb5774..7d340b4f 100644
--- a/.github/workflows/word_cloud_generator.yaml
+++ b/.github/workflows/word_cloud_generator.yaml
@@ -1,3 +1,6 @@
+permissions:
+  contents: read
+  
 name: Word Cloud Generator Unittest
 
 on: 
@@ -19,9 +22,9 @@ jobs:
       matrix:
         python-version: ["3.9"]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"