diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6ff518bf..82bde338 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [main]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -15,7 +18,7 @@ jobs:
           egress-policy: audit
 
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
       - name: Build containers
         run: docker compose build --build-arg MIX_ENV=test
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 00000000..e666af32
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,78 @@
+# For most projects, this workflow file will not need changing; you simply need
+# to commit it to your repository.
+#
+# You may wish to alter this file to override the set of languages analyzed,
+# or to provide custom queries or build logic.
+#
+# ******** NOTE ********
+# We have attempted to detect the languages in your repository. Please check
+# the `language` matrix defined below to confirm you have the correct set of
+# supported CodeQL languages.
+#
+name: "CodeQL"
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: ["main"]
+  schedule:
+    - cron: "0 0 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ["javascript", "typescript"]
+        # CodeQL supports [ $supported-codeql-languages ]
+        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@17d0e2bd7d51742c71671bd19fa12bdc9d40a3d6 # v2.8.1
+        with:
+          egress-policy: audit
+
+      - name: Checkout repository
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@a073c66b2accf653a511d88537804dcafa07812e # v2.25.10
+        with:
+          languages: ${{ matrix.language }}
+          # If you wish to specify custom queries, you can do so here or in a config file.
+          # By default, queries listed here will override any specified in a config file.
+          # Prefix the list here with "+" to use these queries and those in the config file.
+
+      # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
+      # If this step fails, then you should remove it and run the build manually (see below)
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@a073c66b2accf653a511d88537804dcafa07812e # v2.25.10
+
+      # ℹ️ Command-line programs to run using the OS shell.
+      # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+
+      #   If the Autobuild fails above, remove it and uncomment the following three lines.
+      #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
+
+      # - run: |
+      #   echo "Run, Build Application using script"
+      #   ./location_of_script_within_repo/buildscript.sh
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@a073c66b2accf653a511d88537804dcafa07812e # v2.25.10
+        with:
+          category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
new file mode 100644
index 00000000..ce491d1e
--- /dev/null
+++ b/.github/workflows/dependency-review.yml
@@ -0,0 +1,27 @@
+# Dependency Review Action
+#
+# This Action will scan dependency manifest files that change as part of a Pull Request,
+# surfacing known-vulnerable versions of the packages declared or updated in the PR.
+# Once installed, if the workflow run is marked as required,
+# PRs introducing known-vulnerable packages will be blocked from merging.
+#
+# Source repository: https://github.com/actions/dependency-review-action
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@17d0e2bd7d51742c71671bd19fa12bdc9d40a3d6 # v2.8.1
+        with:
+          egress-policy: audit
+
+      - name: 'Checkout Repository'
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@0efb1d1d84fc9633afcdaad14c485cbbc90ef46c # v2.5.1
diff --git a/.github/workflows/fast-forward.yaml b/.github/workflows/fast-forward.yaml
index 98817299..7f598362 100644
--- a/.github/workflows/fast-forward.yaml
+++ b/.github/workflows/fast-forward.yaml
@@ -4,6 +4,9 @@ on:
   issue_comment:
     types: [created, edited]
 
+permissions:
+  contents: read
+
 jobs:
   fast-forward:
     # Only run if the comment contains the /fast-forward command.
@@ -22,7 +25,7 @@ jobs:
           egress-policy: audit
 
       - name: Fast forwarding
-        uses: sequoia-pgp/fast-forward@v1
+        uses: sequoia-pgp/fast-forward@ea7628bedcb0b0b96e94383ada458d812fca4979 # v1.0.0
         with:
           merge: true
           # To reduce the workflow's verbosity, use 'on-error'
diff --git a/.github/workflows/heroku.yaml b/.github/workflows/heroku.yaml
index 2c404c51..b57b1f08 100644
--- a/.github/workflows/heroku.yaml
+++ b/.github/workflows/heroku.yaml
@@ -22,7 +22,7 @@ jobs:
           egress-policy: audit
 
       # Forward deployment's status to the deployed commit.
-      - uses: octokit/request-action@v2.x
+      - uses: octokit/request-action@1f5f8ff67cfd43e6d1abe41548675d93e4f402c5 # v2.x
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
@@ -50,7 +50,7 @@ jobs:
           egress-policy: audit
 
       - id: health_check
-        uses: jtalk/url-health-check-action@v4
+        uses: jtalk/url-health-check-action@b716ccb6645355dd9fcce8002ce460e5474f7f00 # v4
         with:
           url: ${{ github.event.deployment.payload.web_url }}
           follow-redirect: true
@@ -58,7 +58,7 @@ jobs:
           retry-delay: 30s
         continue-on-error: true
       # Set appropriate status to the deployed commit.
-      - uses: octokit/request-action@v2.x
+      - uses: octokit/request-action@1f5f8ff67cfd43e6d1abe41548675d93e4f402c5 # v2.x
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 00000000..723e338d
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,18 @@
+repos:
+- repo: https://github.com/gitleaks/gitleaks
+  rev: v8.16.3
+  hooks:
+  - id: gitleaks
+- repo: https://github.com/jumanjihouse/pre-commit-hooks
+  rev: 3.0.0
+  hooks:
+  - id: shellcheck
+- repo: https://github.com/pre-commit/mirrors-eslint
+  rev: v8.38.0
+  hooks:
+  - id: eslint
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  - id: end-of-file-fixer
+  - id: trailing-whitespace
diff --git a/Dockerfile b/Dockerfile
index 14671a55..f7c5d865 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # Largely based on https://github.com/nicbet/docker-phoenix/blob/main/Dockerfile
 
-FROM node:20.12.2-alpine AS node
-FROM elixir:1.16-otp-26-alpine AS setup
+FROM node:20.12.2-alpine@sha256:7a91aa397f2e2dfbfcdad2e2d72599f374e0b0172be1d86eeb73f1d33f36a4b2 AS node
+FROM elixir:1.16-otp-26-alpine@sha256:829bebfcdc6fc58c56effc0d77f660de7c902fcf74e785b3175ee3a8f739b3f5 AS setup
 
 
 ### Install deps