diff --git a/.github/workflows/autofix.yml b/.github/workflows/autofix.yml
index b9f4dadc2..23351ab9f 100644
--- a/.github/workflows/autofix.yml
+++ b/.github/workflows/autofix.yml
@@ -18,11 +18,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
+          persist-credentials: false
       - name: Setup Tools
-        uses: tanstack/config/.github/setup@main
+        uses: tanstack/config/.github/setup@e4b48f16568324f76f467aa4c2aac2f05db632c3
       - name: Fix formatting
         run: pnpm format
       - name: Apply fixes
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index c4bb5e220..0130d3800 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -18,10 +18,11 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0 # required for Claude Code
-      - uses: anthropics/claude-code-action@v1
+          persist-credentials: false
+      - uses: anthropics/claude-code-action@f4fb5c6cdccc1ee7af63692f5d08d56efaa64cc8 # v1.0.121
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           # Responds to @claude mentions in comments
diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index 6f3d6b54a..4c83337bd 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -5,6 +5,9 @@ on:
     branches: [main]
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   e2e-tests:
     name: Run E2E Tests
@@ -13,15 +16,17 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v4.4.0
         with:
           version: 10.27.0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: '20'
           cache: 'pnpm'
@@ -123,7 +128,7 @@ jobs:
 
       - name: Upload test results
         if: failure()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
         with:
           name: test-results
           path: packages/db-collection-e2e/junit/
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 64525c50b..48f12e07c 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -15,7 +15,6 @@ env:
 
 permissions:
   contents: read
-  pull-requests: write
 
 jobs:
   test:
@@ -23,13 +22,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
+          persist-credentials: false
       - name: Setup Tools
-        uses: tanstack/config/.github/setup@main
+        uses: tanstack/config/.github/setup@e4b48f16568324f76f467aa4c2aac2f05db632c3
       - name: Get base and head commits for `nx affected`
-        uses: nrwl/nx-set-shas@v4.4.0
+        uses: nrwl/nx-set-shas@3e9ad7370203c1e93d109be57f3b72eb0eb511b1 # v4.4.0
         with:
           main-branch-name: main
       - name: Run Checks
@@ -51,26 +51,30 @@ jobs:
   preview:
     name: Preview
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
+          persist-credentials: false
       - name: Setup Tools
-        uses: tanstack/config/.github/setup@main
+        uses: tanstack/config/.github/setup@e4b48f16568324f76f467aa4c2aac2f05db632c3
       - name: Build Packages
         run: pnpm run build
       - name: Publish Previews
         run: pnpx pkg-pr-new publish --pnpm --compact './packages/*' --template './examples/*/*'
       - name: Compressed Size Action - DB Package
-        uses: preactjs/compressed-size-action@v2
+        uses: preactjs/compressed-size-action@66325aad6443cb7cf89c4bfcd414aea2367cda94 # 2.9.1
         with:
           repo-token: '${{ secrets.GITHUB_TOKEN }}'
           pattern: './packages/db/dist/**/*.{js,mjs}'
           comment-key: 'db-package-size'
           build-script: 'build:minified'
       - name: Compressed Size Action - React DB Package
-        uses: preactjs/compressed-size-action@v2
+        uses: preactjs/compressed-size-action@66325aad6443cb7cf89c4bfcd414aea2367cda94 # 2.9.1
         with:
           repo-token: '${{ secrets.GITHUB_TOKEN }}'
           pattern: './packages/react-db/dist/**/*.{js,mjs}'
@@ -81,9 +85,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
       - name: Setup Tools
-        uses: tanstack/config/.github/setup@main
+        uses: tanstack/config/.github/setup@e4b48f16568324f76f467aa4c2aac2f05db632c3
       - name: Build Packages
         run: pnpm run build
       - name: Build Example Site
@@ -95,9 +101,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
       - name: Setup Tools
-        uses: tanstack/config/.github/setup@main
+        uses: tanstack/config/.github/setup@e4b48f16568324f76f467aa4c2aac2f05db632c3
       - name: Build Packages
         run: pnpm run build
       - name: Build Starter Site
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 6c5d363b9..6ec135f94 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,16 +23,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
+          persist-credentials: true # release job pushes version/docs changes
       - name: Setup Tools
-        uses: tanstack/config/.github/setup@main
+        uses: tanstack/config/.github/setup@e4b48f16568324f76f467aa4c2aac2f05db632c3
       - name: Run Tests
         run: pnpm run lint && pnpm run build && pnpm run test
       - name: Run Changesets (version or publish)
         id: changesets
-        uses: changesets/action@v1.5.3
+        uses: changesets/action@e0145edc7d9d8679003495b11f87bd8ef63c0cba # v1.5.3
         with:
           version: pnpm run changeset:version
           publish: pnpm run changeset:publish
@@ -85,6 +86,6 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Comment on PRs about release
         if: steps.changesets.outputs.published == 'true'
-        uses: tanstack/config/.github/comment-on-release@main
+        uses: tanstack/config/.github/comment-on-release@e4b48f16568324f76f467aa4c2aac2f05db632c3
         with:
           published-packages: ${{ steps.changesets.outputs.publishedPackages }}
diff --git a/.github/workflows/reproduce-and-fix-issue-claude.yml b/.github/workflows/reproduce-and-fix-issue-claude.yml
index 75bd6e259..10cfeb2fe 100644
--- a/.github/workflows/reproduce-and-fix-issue-claude.yml
+++ b/.github/workflows/reproduce-and-fix-issue-claude.yml
@@ -28,12 +28,13 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
+          persist-credentials: false
 
       - name: Run Claude Code (auto issue handler)
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@f4fb5c6cdccc1ee7af63692f5d08d56efaa64cc8 # v1.0.121
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           claude_args: |
diff --git a/.github/workflows/review-pr-claude.yml b/.github/workflows/review-pr-claude.yml
index e40e97580..a38f98d42 100644
--- a/.github/workflows/review-pr-claude.yml
+++ b/.github/workflows/review-pr-claude.yml
@@ -28,9 +28,10 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           fetch-depth: 0
+          persist-credentials: false
 
       - name: Get PR branch
         id: pr-info
@@ -42,10 +43,12 @@ jobs:
           echo "base_ref=$(echo $PR_DATA | jq -r '.baseRefName')" >> $GITHUB_OUTPUT
 
       - name: Checkout PR branch
-        run: git checkout ${{ steps.pr-info.outputs.head_ref }}
+        env:
+          HEAD_REF: ${{ steps.pr-info.outputs.head_ref }}
+        run: git checkout "$HEAD_REF"
 
       - name: Run Claude Code (PR review)
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@f4fb5c6cdccc1ee7af63692f5d08d56efaa64cc8 # v1.0.121
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 000000000..2202c720f
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,25 @@
+name: GitHub Actions Security Analysis
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: ['**']
+
+permissions: {}
+
+jobs:
+  zizmor:
+    name: zizmor
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Run zizmor
+        uses: zizmorcore/zizmor-action@b1d7e1fb5de872772f31590499237e7cce841e8e # v0.5.3
+        with:
+          advanced-security: false
+          annotations: true