diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..ce53b47
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,32 @@
+version: 2
+updates:
+  # Ruby gems
+  - package-ecosystem: "bundler"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    open-pull-requests-limit: 10
+    labels:
+      - "dependencies"
+
+  # GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+      - "github-actions"
+
+  # npm (JavaScript/Stimulus)
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    open-pull-requests-limit: 10
+    labels:
+      - "dependencies"
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..b8f6472
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,40 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: '0 6 * * 1'  # Weekly on Mondays at 6am UTC
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'ruby', 'javascript' ]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v3
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{ matrix.language }}"
diff --git a/.github/workflows/rubyonrails.yml b/.github/workflows/rubyonrails.yml
index 825fcbc..aec798b 100644
--- a/.github/workflows/rubyonrails.yml
+++ b/.github/workflows/rubyonrails.yml
@@ -19,7 +19,7 @@ jobs:
       RAILS_ENV: test
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       # Add or replace dependency steps here
       - name: Install Ruby and gems
         uses: ruby/setup-ruby@v1
@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install Ruby and gems
         uses: ruby/setup-ruby@v1
         with:
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000..2e1919c
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,34 @@
+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| main    | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+If you discover a security vulnerability in Project Daedalus, please report it responsibly:
+
+1. **Do not** open a public GitHub issue for security vulnerabilities.
+2. Use [GitHub Security Advisories](https://github.com/AgentKush/project_daedalus/security/advisories/new) to report the vulnerability privately.
+3. Alternatively, contact the maintainers directly via the [Icarus Modding Discord](https://discord.gg/linkarus-icarus-modding-936621749733302292).
+
+We will acknowledge receipt within 48 hours and aim to provide a fix or mitigation within 7 days for critical issues.
+
+## Security Measures
+
+This project uses the following security tools:
+
+- **Dependabot** — automatic alerts and PRs for vulnerable dependencies
+- **Secret scanning** — detects accidentally committed secrets and API keys
+- **Push protection** — blocks pushes that contain secrets
+- **CodeQL** — static analysis for common vulnerability patterns in Ruby and JavaScript
+- **bundle-audit** — Ruby gem vulnerability scanning in CI
+
+## Best Practices for Contributors
+
+- Never commit secrets, API keys, or credentials to the repository
+- Firebase credentials belong in Rails encrypted credentials (`rails credentials:edit`), not in code
+- Environment variables (e.g., `ADMIN_PASSWORD`) should be set in the deployment environment, not in `.env` files committed to the repo
+- Keep dependencies up to date — review Dependabot PRs promptly
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index f5bc6c7..51a1614 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -3,6 +3,7 @@
 require "spec_helper"
 require_relative "support/factory_bot"
 require_relative "support/chrome"
+require_relative "support/firestore"
 
 ENV["RAILS_ENV"] ||= "test"
 require_relative "../config/environment"
diff --git a/spec/requests/tools_spec.rb b/spec/requests/tools_spec.rb
index 16ef3a9..0c1663e 100644
--- a/spec/requests/tools_spec.rb
+++ b/spec/requests/tools_spec.rb
@@ -3,9 +3,13 @@
 require "rails_helper"
 
 RSpec.describe "Tools" do
-  describe "GET /index" do
+  before do
+    allow(Tool).to receive(:all).and_return([build(:tool)])
+  end
+
+  describe "GET /tools" do
     it "returns http success" do
-      get "/tools/index"
+      get "/tools"
       expect(response).to have_http_status(:success)
     end
   end
diff --git a/spec/support/firestore.rb b/spec/support/firestore.rb
new file mode 100644
index 0000000..f1859cc
--- /dev/null
+++ b/spec/support/firestore.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+# Stub Firebase credentials globally so tests don't fail when
+# credentials are not configured (e.g., in CI environments).
+#
+# Individual specs should still mock Google::Cloud::Firestore.new
+# to return a test double, but this prevents the Firestorable concern
+# from raising before the mock can intercept.
+RSpec.configure do |config|
+  config.before do
+    credentials = Rails.application.credentials
+    unless credentials.respond_to?(:firebase_keyfile) && credentials.firebase_keyfile.present?
+      allow(Rails.application.credentials).to receive(:firebase_keyfile).and_return(
+        { type: "service_account", project_id: "test-project" }
+      )
+    end
+  end
+end