diff --git a/.github/workflows/Build ThunderNanoServicesRDK on Linux.yml b/.github/workflows/Build ThunderNanoServicesRDK on Linux.yml
index 2a0051ce..8cd8d81b 100644
--- a/.github/workflows/Build ThunderNanoServicesRDK on Linux.yml	
+++ b/.github/workflows/Build ThunderNanoServicesRDK on Linux.yml	
@@ -1,5 +1,8 @@
 name: Build ThunderNanoServicesRDK on Linux
 
+permissions:
+  contents: read
+
 on:
   workflow_dispatch:
   push:
diff --git a/.github/workflows/Build ThunderNanoServicesRDK on MacOS.yml b/.github/workflows/Build ThunderNanoServicesRDK on MacOS.yml
index bc61a12d..d73a82cc 100644
--- a/.github/workflows/Build ThunderNanoServicesRDK on MacOS.yml	
+++ b/.github/workflows/Build ThunderNanoServicesRDK on MacOS.yml	
@@ -1,5 +1,8 @@
 name: Build ThunderNanoServicesRDK on MacOS
 
+permissions:
+  contents: read
+
 on:
   workflow_dispatch:
   push:
diff --git a/.github/workflows/Build ThunderNanoServicesRDK on Windows.yml b/.github/workflows/Build ThunderNanoServicesRDK on Windows.yml
index c81b0b9d..1c166816 100644
--- a/.github/workflows/Build ThunderNanoServicesRDK on Windows.yml	
+++ b/.github/workflows/Build ThunderNanoServicesRDK on Windows.yml	
@@ -1,5 +1,8 @@
 name: Build ThunderNanoServicesRDK on Windows
 
+permissions:
+  contents: read
+
 on:
   workflow_dispatch:
   push:
diff --git a/.github/workflows/Linux build template.yml b/.github/workflows/Linux build template.yml
index 4a1c8e99..28fa23b2 100644
--- a/.github/workflows/Linux build template.yml	
+++ b/.github/workflows/Linux build template.yml	
@@ -1,5 +1,8 @@
 name: Linux build template
 
+permissions:
+  contents: read
+
 on:
   workflow_call:
 
diff --git a/.github/workflows/MacOS build template.yml b/.github/workflows/MacOS build template.yml
index 7d710dc0..bd3581a1 100644
--- a/.github/workflows/MacOS build template.yml	
+++ b/.github/workflows/MacOS build template.yml	
@@ -1,5 +1,8 @@
 name: MacOS build template
 
+permissions:
+  contents: read
+
 on:
   workflow_call: