diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index ca79ca5..2039a0e 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -4,3 +4,7 @@ updates:
     directory: /
     schedule:
       interval: weekly
+    groups:
+      actions:
+        patterns:
+        - '*'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e2df537..754103c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: ShellCheck (errors only)
         run: |
           shellcheck --version
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..36b995a
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,38 @@
+name: CodeQL
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+  schedule:
+    - cron: "23 4 * * 1"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      contents: read
+      security-events: write
+      actions: read
+    strategy:
+      fail-fast: false
+      matrix:
+        language:
+          - actions
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - uses: github/codeql-action/init@2892aa5e19bbd11bc0cff5427e3b750a04d9e3c2 # v4.38.2
+        with:
+          languages: ${{ matrix.language }}
+          queries: security-extended
+      - uses: github/codeql-action/analyze@2892aa5e19bbd11bc0cff5427e3b750a04d9e3c2 # v4.38.2
+        with:
+          category: /language:${{ matrix.language }}
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
new file mode 100644
index 0000000..6e6dc35
--- /dev/null
+++ b/.github/workflows/scorecard.yml
@@ -0,0 +1,31 @@
+name: OpenSSF Scorecard
+
+on:
+  push:
+    branches: [main]
+  schedule:
+    - cron: "41 5 * * 1"
+  workflow_dispatch:
+
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    permissions:
+      security-events: write
+      id-token: write
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - uses: ossf/scorecard-action@2d1146689b8cda280b9bc96326124645441f03bc # v2.4.4
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true
+      - uses: github/codeql-action/upload-sarif@2892aa5e19bbd11bc0cff5427e3b750a04d9e3c2 # v4.38.2
+        with:
+          sarif_file: results.sarif
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
new file mode 100644
index 0000000..0d3a45d
--- /dev/null
+++ b/.github/workflows/security.yml
@@ -0,0 +1,72 @@
+name: Security
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: security-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  actionlint:
+    name: Lint workflows
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Run actionlint
+        uses: raven-actions/actionlint@3d39aea434753780c3b3d4a1a31c854b4dbf49d7 # v2.2.0
+        env:
+          SHELLCHECK_OPTS: --severity=warning
+
+  secret-scan:
+    name: Secret scan
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+      - name: Run gitleaks
+        run: |
+          docker run --rm -v "$PWD:/repo" zricethezav/gitleaks:v8.30.1@sha256:c00b6bd0aeb3071cbcb79009cb16a60dd9e0a7c60e2be9ab65d25e6bc8abbb7f git /repo --redact --no-banner
+
+  dependency-review:
+    name: Dependency review
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - uses: actions/dependency-review-action@a1d282b36b6f3519aa1f3fc636f609c47dddb294 # v5.0.0
+        with:
+          fail-on-severity: high
+
+  # Queues Dependabot PRs for auto-merge; GitHub merges once every required check passes.
+  dependabot-automerge:
+    name: Auto-merge Dependabot
+    needs: [actionlint, secret-scan, dependency-review]
+    if: github.event_name == 'pull_request' && github.event.pull_request.user.login == 'dependabot[bot]'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      contents: write
+      pull-requests: write
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      GH_REPO: ${{ github.repository }}
+      PR_URL: ${{ github.event.pull_request.html_url }}
+    steps:
+      - name: Enable auto-merge
+        run: gh pr merge "$PR_URL" --auto --squash --delete-branch
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000..c16daef
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,14 @@
+# Security Policy
+
+## Reporting a vulnerability
+
+Please **do not** open a public issue for security problems.
+
+Report vulnerabilities privately through GitHub:
+[Report a vulnerability](https://github.com/Nerdy-Technician/LinuxRMM-Script/security/advisories/new)
+
+Include what you found, where (file or URL), and steps to reproduce. You'll get a response as soon as possible, and credit once a fix is out if you'd like it.
+
+## Supported versions
+
+Only the latest version on the `main` branch (and the latest release, where there are releases) receives security fixes.