diff --git a/.github/workflows/check-change-note.yml b/.github/workflows/check-change-note.yml
index e701090420dcb..026408a028d55 100644
--- a/.github/workflows/check-change-note.yml
+++ b/.github/workflows/check-change-note.yml
@@ -1,5 +1,8 @@
 name: Check change note
 
+permissions:
+  pull-requests: read
+
 on:
   pull_request_target:
     types: [labeled, unlabeled, opened, synchronize, reopened, ready_for_review]
diff --git a/.github/workflows/check-implicit-this.yml b/.github/workflows/check-implicit-this.yml
index 14100ed332525..f58db399ccb9e 100644
--- a/.github/workflows/check-implicit-this.yml
+++ b/.github/workflows/check-implicit-this.yml
@@ -9,6 +9,9 @@ on:
       - main
       - "rc/*"
 
+permissions:
+  contents: read
+
 jobs:
   check:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/check-qldoc.yml b/.github/workflows/check-qldoc.yml
index 7996123e9bf3a..e64d661c7911a 100644
--- a/.github/workflows/check-qldoc.yml
+++ b/.github/workflows/check-qldoc.yml
@@ -10,6 +10,9 @@ on:
       - main
       - "rc/*"
 
+permissions:
+  contents: read
+
 jobs:
   qldoc:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/check-query-ids.yml b/.github/workflows/check-query-ids.yml
index 9e84fe0b0e352..8ae19cc3e5f80 100644
--- a/.github/workflows/check-query-ids.yml
+++ b/.github/workflows/check-query-ids.yml
@@ -11,6 +11,9 @@ on:
       - "rc/*"
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   check:
     name: Check query IDs
diff --git a/.github/workflows/close-stale.yml b/.github/workflows/close-stale.yml
index a9e0d27630893..1c74ede8bf6f5 100644
--- a/.github/workflows/close-stale.yml
+++ b/.github/workflows/close-stale.yml
@@ -5,6 +5,9 @@ on:
   schedule:
     - cron: "30 1 * * *"
 
+permissions:
+  issues: write
+
 jobs:
   stale:
     if: github.repository == 'github/codeql'
diff --git a/.github/workflows/compile-queries.yml b/.github/workflows/compile-queries.yml
index c44aa56a75309..223eeb902033d 100644
--- a/.github/workflows/compile-queries.yml
+++ b/.github/workflows/compile-queries.yml
@@ -8,6 +8,9 @@ on:
       - "codeql-cli-*"
   pull_request:
 
+permissions:
+  contents: read
+
 jobs:
   compile-queries:
     runs-on: ubuntu-latest-xl
diff --git a/.github/workflows/csharp-qltest.yml b/.github/workflows/csharp-qltest.yml
index 2b8ecad83d9b8..455e1f089a971 100644
--- a/.github/workflows/csharp-qltest.yml
+++ b/.github/workflows/csharp-qltest.yml
@@ -25,6 +25,10 @@ defaults:
   run:
     working-directory: csharp
 
+permissions:
+  contents: read
+  security-events: read
+
 jobs:
   qlupgrade:
     runs-on: ubuntu-latest
@@ -51,6 +55,9 @@ jobs:
       fail-fast: false
       matrix:
         slice: ["1/2", "2/2"]
+    permissions:
+      contents: read
+      security-events: write
     steps:
       - uses: actions/checkout@v4
       - uses: ./csharp/actions/create-extractor-pack
diff --git a/.github/workflows/csv-coverage-metrics.yml b/.github/workflows/csv-coverage-metrics.yml
index e24c6bc74a4cb..6f1170047bfd6 100644
--- a/.github/workflows/csv-coverage-metrics.yml
+++ b/.github/workflows/csv-coverage-metrics.yml
@@ -14,6 +14,10 @@ on:
       - ".github/workflows/csv-coverage-metrics.yml"
       - ".github/actions/fetch-codeql/action.yml"
 
+permissions:
+  contents: read
+  security-events: write
+
 jobs:
   publish-java:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/csv-coverage-pr-artifacts.yml b/.github/workflows/csv-coverage-pr-artifacts.yml
index 8e2df456260fb..b5baa70321d5a 100644
--- a/.github/workflows/csv-coverage-pr-artifacts.yml
+++ b/.github/workflows/csv-coverage-pr-artifacts.yml
@@ -19,6 +19,10 @@ on:
       - main
       - "rc/*"
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   generate:
     name: Generate framework coverage artifacts
diff --git a/.github/workflows/csv-coverage-pr-comment.yml b/.github/workflows/csv-coverage-pr-comment.yml
index 86fe74d3419a5..cf01ef063acf6 100644
--- a/.github/workflows/csv-coverage-pr-comment.yml
+++ b/.github/workflows/csv-coverage-pr-comment.yml
@@ -6,6 +6,10 @@ on:
     types:
       - completed
 
+permissions:
+  contents: read
+  pull-requests: write
+
 jobs:
   check:
     name: Check framework coverage differences and comment
diff --git a/.github/workflows/csv-coverage-timeseries.yml b/.github/workflows/csv-coverage-timeseries.yml
index cf2758dd9d344..f2e1ed47a3d10 100644
--- a/.github/workflows/csv-coverage-timeseries.yml
+++ b/.github/workflows/csv-coverage-timeseries.yml
@@ -3,6 +3,9 @@ name: Build framework coverage timeseries reports
 on:
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/csv-coverage-update.yml b/.github/workflows/csv-coverage-update.yml
index ccf1ffd470538..cfc39df5f661a 100644
--- a/.github/workflows/csv-coverage-update.yml
+++ b/.github/workflows/csv-coverage-update.yml
@@ -5,6 +5,10 @@ on:
   schedule:
     - cron: "0 0 * * *"
 
+permissions:
+  contents: read
+  security-events: write
+
 jobs:
   update:
     name: Update framework coverage report
diff --git a/.github/workflows/csv-coverage.yml b/.github/workflows/csv-coverage.yml
index 4fb1d143fc394..9461ba887f5e1 100644
--- a/.github/workflows/csv-coverage.yml
+++ b/.github/workflows/csv-coverage.yml
@@ -7,6 +7,9 @@ on:
         description: "github/codeql repo SHA used for looking up the CSV models"
         required: false
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/fast-forward.yml b/.github/workflows/fast-forward.yml
index c89675efc4ed4..0c59ddc9284f2 100644
--- a/.github/workflows/fast-forward.yml
+++ b/.github/workflows/fast-forward.yml
@@ -7,6 +7,9 @@ name: Fast-forward tracking branch for selected CodeQL version
 on:
   workflow_dispatch:
 
+permissions:
+  contents: write
+
 jobs:
   fast-forward:
     name: Fast-forward tracking branch for selected CodeQL version
diff --git a/.github/workflows/go-tests-other-os.yml b/.github/workflows/go-tests-other-os.yml
index 8b0395fad9066..8bed69d2079e2 100644
--- a/.github/workflows/go-tests-other-os.yml
+++ b/.github/workflows/go-tests-other-os.yml
@@ -9,6 +9,10 @@ on:
       - codeql-workspace.yml
 env:
   GO_VERSION: '~1.21.0'
+
+permissions:
+  contents: read
+
 jobs:
   test-mac:
     name: Test MacOS
diff --git a/.github/workflows/go-tests.yml b/.github/workflows/go-tests.yml
index 9d518ac70b656..51e01e9a31e31 100644
--- a/.github/workflows/go-tests.yml
+++ b/.github/workflows/go-tests.yml
@@ -17,6 +17,10 @@ on:
       - codeql-workspace.yml
 env:
   GO_VERSION: '~1.21.0'
+
+permissions:
+  contents: read
+
 jobs:
   test-linux:
     name: Test Linux (Ubuntu)
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
index 057208eda328d..78f56b7e18d17 100644
--- a/.github/workflows/labeler.yml
+++ b/.github/workflows/labeler.yml
@@ -2,6 +2,10 @@ name: "Pull Request Labeler"
 on:
 - pull_request_target
 
+permissions:
+  contents: read
+  pull-requests: write
+
 jobs:
   triage:
     permissions:
diff --git a/.github/workflows/mad_regenerate-models.yml b/.github/workflows/mad_regenerate-models.yml
index 3268a17dfbb4e..1c7d14238f330 100644
--- a/.github/workflows/mad_regenerate-models.yml
+++ b/.github/workflows/mad_regenerate-models.yml
@@ -11,6 +11,9 @@ on:
       - ".github/workflows/mad_regenerate-models.yml"
       - ".github/actions/fetch-codeql/action.yml"
 
+permissions:
+  contents: read
+
 jobs:
   regenerate-models:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/ql-for-ql-build.yml b/.github/workflows/ql-for-ql-build.yml
index e8ac1fa0f1734..0c58adb1f05cc 100644
--- a/.github/workflows/ql-for-ql-build.yml
+++ b/.github/workflows/ql-for-ql-build.yml
@@ -9,6 +9,10 @@ on:
 env:
   CARGO_TERM_COLOR: always
 
+permissions:
+  contents: read
+  security-events: read
+
 jobs:
   analyze:
     runs-on: ubuntu-latest-xl
diff --git a/.github/workflows/ql-for-ql-dataset_measure.yml b/.github/workflows/ql-for-ql-dataset_measure.yml
index d317d467c9aa2..e33e3cf9e782f 100644
--- a/.github/workflows/ql-for-ql-dataset_measure.yml
+++ b/.github/workflows/ql-for-ql-dataset_measure.yml
@@ -11,6 +11,10 @@ on:
       - ql/ql/src/ql.dbscheme
   workflow_dispatch:
 
+permissions:
+  contents: read
+  security-events: read
+
 jobs:
   measure:
     env:
diff --git a/.github/workflows/ql-for-ql-tests.yml b/.github/workflows/ql-for-ql-tests.yml
index 4385e3f76bb14..cd7723fc8ebd3 100644
--- a/.github/workflows/ql-for-ql-tests.yml
+++ b/.github/workflows/ql-for-ql-tests.yml
@@ -17,6 +17,10 @@ on:
 env:
   CARGO_TERM_COLOR: always
 
+permissions:
+  contents: read
+  security-events: write
+
 jobs:
   qltest:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/query-list.yml b/.github/workflows/query-list.yml
index 07fb3b682da3f..17ba94c94e8fe 100644
--- a/.github/workflows/query-list.yml
+++ b/.github/workflows/query-list.yml
@@ -13,6 +13,10 @@ on:
       - '.github/actions/fetch-codeql/action.yml'
       - 'misc/scripts/generate-code-scanning-query-list.py'
 
+permissions:
+  contents: read
+  security-events: read
+
 jobs:
   build:
 
diff --git a/.github/workflows/ruby-build.yml b/.github/workflows/ruby-build.yml
index 392c6ff830262..845f2a07aed40 100644
--- a/.github/workflows/ruby-build.yml
+++ b/.github/workflows/ruby-build.yml
@@ -32,6 +32,9 @@ defaults:
   run:
     working-directory: ruby
 
+permissions:
+  contents: read
+
 jobs:
   build:
     strategy:
diff --git a/.github/workflows/ruby-dataset-measure.yml b/.github/workflows/ruby-dataset-measure.yml
index c064d8d2bfb4b..6aece12b749e7 100644
--- a/.github/workflows/ruby-dataset-measure.yml
+++ b/.github/workflows/ruby-dataset-measure.yml
@@ -17,6 +17,10 @@ on:
       - .github/workflows/ruby-dataset-measure.yml
   workflow_dispatch:
 
+permissions:
+  contents: read
+  security-events: read
+
 jobs:
   measure:
     env:
diff --git a/.github/workflows/ruby-qltest.yml b/.github/workflows/ruby-qltest.yml
index 19d5325091fde..201f542f04df4 100644
--- a/.github/workflows/ruby-qltest.yml
+++ b/.github/workflows/ruby-qltest.yml
@@ -29,6 +29,10 @@ defaults:
   run:
     working-directory: ruby
 
+permissions:
+  contents: read
+  security-events: read
+
 jobs:
   qlupgrade:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/swift.yml b/.github/workflows/swift.yml
index ff9cd29e238de..44daa6c4a4b44 100644
--- a/.github/workflows/swift.yml
+++ b/.github/workflows/swift.yml
@@ -33,6 +33,10 @@ on:
       - rc/*
       - codeql-cli-*
 
+permissions:
+  contents: read
+  security-events: read
+
 jobs:
   # not using a matrix as you cannot depend on a specific job in a matrix, and we want to start linux checks
   # without waiting for the macOS build
diff --git a/.github/workflows/sync-files.yml b/.github/workflows/sync-files.yml
index 7894eae7f55a8..1ed49ac3ecf63 100644
--- a/.github/workflows/sync-files.yml
+++ b/.github/workflows/sync-files.yml
@@ -10,6 +10,9 @@ on:
       - main
       - 'rc/*'
 
+permissions:
+  contents: read
+
 jobs:
   sync:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/tree-sitter-extractor-test.yml b/.github/workflows/tree-sitter-extractor-test.yml
index 5d13b25466d34..acc68e7ec2c71 100644
--- a/.github/workflows/tree-sitter-extractor-test.yml
+++ b/.github/workflows/tree-sitter-extractor-test.yml
@@ -23,6 +23,9 @@ defaults:
   run:
     working-directory: shared/tree-sitter-extractor
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/validate-change-notes.yml b/.github/workflows/validate-change-notes.yml
index f8c1d9f650422..66d65e9c62f35 100644
--- a/.github/workflows/validate-change-notes.yml
+++ b/.github/workflows/validate-change-notes.yml
@@ -15,6 +15,10 @@ on:
       - ".github/workflows/validate-change-notes.yml"
       - ".github/actions/fetch-codeql/action.yml"
 
+permissions:
+  contents: read
+  security-events: write
+
 jobs:
   check-change-note:
     runs-on: ubuntu-latest
diff --git a/csharp/actions/create-extractor-pack/action.yml b/csharp/actions/create-extractor-pack/action.yml
index f113d69061d5e..2186adb7a8eae 100644
--- a/csharp/actions/create-extractor-pack/action.yml
+++ b/csharp/actions/create-extractor-pack/action.yml
@@ -1,5 +1,9 @@
 name: Build C# CodeQL pack
 description: Builds the C# CodeQL pack
+
+# permissions:
+#   security-events: read
+
 runs:
   using: composite
   steps: