diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index bb76b9a..6f23bc9 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -11,6 +11,8 @@
 #
 name: "CodeQL Advanced"
 
+permissions: {} # overwritten below
+
 on:
   push:
     branches: [ "master" ]
@@ -19,6 +21,10 @@ on:
   schedule:
     - cron: '31 8 * * 4'
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   analyze:
     name: Analyze (${{ matrix.language }})
@@ -29,15 +35,12 @@ jobs:
     # Consider using larger runners or machines with greater resources for possible analysis time improvements.
     runs-on: ${{ (matrix.language == 'swift' && 'macos-latest') || 'ubuntu-latest' }}
     permissions:
-      # required for all workflows
-      security-events: write
-
-      # required to fetch internal or private CodeQL packs
-      packages: read
+      security-events: write # codeql writes results
+      packages: read # codeql fetch private packs
 
       # only required for workflows in private repositories
-      actions: read
-      contents: read
+      # actions: read
+      # contents: read
 
     strategy:
       fail-fast: false
@@ -57,7 +60,9 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     # Add any setup steps before running the `github/codeql-action/init` action.
     # This includes steps like installing compilers or runtimes (`actions/setup-node`
@@ -67,7 +72,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@68bde559dea0fdcac2102bfdf6230c5f70eb485e # v4.35.4
       with:
         languages: ${{ matrix.language }}
         build-mode: ${{ matrix.build-mode }}
@@ -84,7 +89,8 @@ jobs:
     # to build your code.
     # 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: matrix.build-mode == 'manual'
+    - name: manual build
+      if: matrix.build-mode == 'manual'
       shell: bash
       run: |
         sudo apt-get install -y libselinux1-dev libbluetooth-dev gettext
@@ -92,6 +98,6 @@ jobs:
         make all
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@68bde559dea0fdcac2102bfdf6230c5f70eb485e # v4.35.4
       with:
         category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/makefile.yml b/.github/workflows/makefile.yml
index 99cc131..9e407ca 100644
--- a/.github/workflows/makefile.yml
+++ b/.github/workflows/makefile.yml
@@ -1,21 +1,31 @@
 name: Compile net-tools
 
+permissions: {} # overwritten below
+
 on:
   push:
     branches: [ "master" ]
   pull_request:
     branches: [ "master" ]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build:
-    permissions:
-      contents: read
-      pull-requests: write
+    name: Compile with make
+    permissions: {}
+      # contents: read
+      # pull-requests: write
 
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - name: checkout
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      with:
+        persist-credentials: false
 
     - name: install-dev
       run: sudo apt-get install libbluetooth-dev libselinux1-dev gettext