diff --git a/.github/workflows/codegen.yml b/.github/workflows/codegen.yml
index 6b330433beef..7a1ed2da3652 100644
--- a/.github/workflows/codegen.yml
+++ b/.github/workflows/codegen.yml
@@ -25,9 +25,10 @@ jobs:
     env:
       JAVA_TOOL_OPTIONS: "-Xmx2g"
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
       with:
         fetch-depth: 0
+        persist-credentials: false
 
     - name: Download Coretto 17 JDK
       run: |
@@ -35,14 +36,14 @@ jobs:
         wget -O $RUNNER_TEMP/java_package.tar.gz $download_url
 
     - name: Set up Coretto 17 JDK
-      uses: actions/setup-java@v2
+      uses: actions/setup-java@91d3aa4956ec4a53e477c4907347b5e3481be8c9 # v2
       with:
         distribution: 'jdkfile'
         jdkFile: ${{ runner.temp }}/java_package.tar.gz
         java-version: 17
         architecture: x64
 
-    - uses: actions/setup-go@v2
+    - uses: actions/setup-go@bfdd3570ce990073878bf10f6b2d79082de49492 # v2
       with:
         go-version: ${{ matrix.go-version }}
 
@@ -61,4 +62,3 @@ jobs:
 
     - name: SDK Codegen
       run: make smithy-generate
-
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 61f91bf7c78d..51b2ac8ca470 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -27,10 +27,12 @@ jobs:
         os: [ubuntu-latest, macos-latest]
         go-version: ["1.24", "1.25", "1.26"]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      with:
+        persist-credentials: false
 
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@bfdd3570ce990073878bf10f6b2d79082de49492 # v2
       with:
         go-version: ${{ matrix.go-version }}
 
@@ -55,10 +57,12 @@ jobs:
     env:
       GOARCH: "386"
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      with:
+        persist-credentials: false
 
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@bfdd3570ce990073878bf10f6b2d79082de49492 # v2
       with:
         go-version: ${{ matrix.go-version }}
 
@@ -83,10 +87,12 @@ jobs:
     env:
       EACHMODULE_SKIP: "internal\\repotools\\changes"
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      with:
+        persist-credentials: false
 
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@bfdd3570ce990073878bf10f6b2d79082de49492 # v2
       with:
         go-version: ${{ matrix.go-version }}
 
diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index c7e1db31545c..a27929a957f8 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -22,13 +22,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Configure AWS credentials
-        uses: aws-actions/configure-aws-credentials@v4
+        uses: aws-actions/configure-aws-credentials@7474bc4690e29a8392af63c5b98e7449536d5c3a # v4
         with:
           role-to-assume: ${{ secrets.CI_AWS_ROLE_ARN }}
           aws-region: us-west-2
       - name: Run tests
         id: integration-tests
-        uses: aws-actions/aws-codebuild-run-build@v1
+        uses: aws-actions/aws-codebuild-run-build@7e46c3fa1c1f217e26a73712796b1f78938b534b # v1
         with:
           project-name: aws-sdk-go-v2-integrationtests
       - name: Cancel tests
@@ -40,4 +40,3 @@ jobs:
             echo "aws codebuild stop-build --id $BUILD_ID"
             aws codebuild stop-build --id $BUILD_ID
           fi
-
diff --git a/.github/workflows/issue-regression-labeler.yml b/.github/workflows/issue-regression-labeler.yml
index adecdbc62839..cff22a3a00b1 100644
--- a/.github/workflows/issue-regression-labeler.yml
+++ b/.github/workflows/issue-regression-labeler.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
       - name: Fetch template body
         id: check_regression
-        uses: actions/github-script@v7
+        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           TEMPLATE_BODY: ${{ github.event.issue.body }}
@@ -24,9 +24,10 @@ jobs:
       - name: Manage regression label
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          STEPS_CHECK_REGRESSION_OUTPUTS_IS_REGRESSION: ${{ steps.check_regression.outputs.is_regression }}
         run: |
-          if [ "${{ steps.check_regression.outputs.is_regression }}" == "true" ]; then
+          if [ "${STEPS_CHECK_REGRESSION_OUTPUTS_IS_REGRESSION}" == "true" ]; then
             gh issue edit ${{ github.event.issue.number }} --add-label "potential-regression" -R ${{ github.repository }}
           else
             gh issue edit ${{ github.event.issue.number }} --remove-label "potential-regression" -R ${{ github.repository }}
-          fi
\ No newline at end of file
+          fi
diff --git a/.github/workflows/license-check.yml b/.github/workflows/license-check.yml
index cd20fae8f743..02e18d407f04 100644
--- a/.github/workflows/license-check.yml
+++ b/.github/workflows/license-check.yml
@@ -16,27 +16,30 @@ jobs:
 
     steps:
       - name: Checkout target
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
         with:
           path: sdkbase
           ref: ${{ github.base_ref }}
+          persist-credentials: false
       - name: Checkout this ref
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
         with:
           path: new-ref
           fetch-depth: 0
+          persist-credentials: false
       - name: Get Diff
         run: git --git-dir ./new-ref/.git diff --name-only --diff-filter=ACMRT ${{ github.event.pull_request.base.sha }} ${{ github.sha }} > refDiffFiles.txt
       - name: Get Target Files
         run: git --git-dir ./sdkbase/.git ls-files | grep -xf refDiffFiles.txt - > targetFiles.txt
       - name: Checkout scancode
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
         with:
           repository: nexB/scancode-toolkit
           path: scancode-toolkit
           fetch-depth: 1
+          persist-credentials: false
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2
         with:
           python-version: ${{ matrix.python-version }}
       # ScanCode
diff --git a/.github/workflows/snapshot.yml b/.github/workflows/snapshot.yml
index d04c8063fbcb..fbe6b679d548 100644
--- a/.github/workflows/snapshot.yml
+++ b/.github/workflows/snapshot.yml
@@ -29,10 +29,12 @@ jobs:
     env:
       EACHMODULE_SKIP: "internal"
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      with:
+        persist-credentials: false
 
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@bfdd3570ce990073878bf10f6b2d79082de49492 # v2
       with:
         go-version: ${{ matrix.go-version }}