diff --git a/code/API_definitions/dedicated-network-accesses.yaml b/code/API_definitions/dedicated-network-accesses.yaml
index e4bd43f..2b670a0 100644
--- a/code/API_definitions/dedicated-network-accesses.yaml
+++ b/code/API_definitions/dedicated-network-accesses.yaml
@@ -25,6 +25,9 @@ paths:
         - Accesses
       summary: Get a list of device accesses to dedicated networks, optionally filtered for a given device and/or for a given dedicated network
       operationId: listNetworkAccesses
+      security:
+        - oAuth2:
+            - dedicated-network:accesses:read
       parameters:
         - name: networkId
           in: query
@@ -59,6 +62,9 @@ paths:
         - Accesses
       summary: Create a device access to a dedicated network with given configuration
       operationId: createNetworkAccess
+      security:
+        - oAuth2:
+            - dedicated-network:access:create
       requestBody:
         content:
           application/json:
@@ -96,6 +102,9 @@ paths:
         - Accesses
       summary: Get a device access to the dedicated network and its configuration
       operationId: readNetworkAccess
+      security:
+        - oAuth2:
+            - dedicated-network:access:read
       parameters:
         - name: accessId
           in: path
@@ -128,6 +137,9 @@ paths:
         - Accesses
       summary: Delete a device access to the dedicated network
       operationId: deleteNetworkAccess
+      security:
+        - oAuth2:
+            - dedicated-network:access:delete
       parameters:
         - name: accessId
           in: path
@@ -152,6 +164,17 @@ paths:
           $ref: "#/components/responses/Generic503"
 
 components:
+  securitySchemes:
+    oAuth2:
+      type: oauth2
+      flows:
+        clientCredentials:
+          tokenUrl: https://api.example.com/oauth/token
+          scopes:
+            dedicated-network:accesses:read: Get a list of device accesses for networks
+            dedicated-network:access:create: Create a device access to a network with given configuration
+            dedicated-network:access:read: Get a device access for the network and its configuration
+            dedicated-network:access:delete: Delete a device access to a network
 
   parameters:
     x-correlator:
diff --git a/code/API_definitions/dedicated-network-profiles.yaml b/code/API_definitions/dedicated-network-profiles.yaml
index aa167f9..691e7f6 100644
--- a/code/API_definitions/dedicated-network-profiles.yaml
+++ b/code/API_definitions/dedicated-network-profiles.yaml
@@ -21,6 +21,9 @@ paths:
         - Profiles
       summary: Read dedicated network profiles
       operationId: readNetworkProfiles
+      security:
+        - oAuth2:
+            - dedicated-network:profiles:read
       parameters:
         - $ref: "#/components/parameters/x-correlator"
       responses:
@@ -50,6 +53,9 @@ paths:
         - Profiles
       summary: Read a dedicated network profile
       operationId: readNetworkProfile
+      security:
+        - oAuth2:
+            - dedicated-network:profile:read
       parameters:
         - name: profileId
           in: path
@@ -78,6 +84,15 @@ paths:
           $ref: "#/components/responses/Generic503"
 
 components:
+  securitySchemes:
+    oAuth2:
+      type: oauth2
+      flows:
+        clientCredentials:
+          tokenUrl: https://api.example.com/oauth/token
+          scopes:
+            dedicated-network:profiles:read: Read network profiles
+            dedicated-network:profile:read: Read a network profile
 
   parameters:
     x-correlator:
diff --git a/code/API_definitions/dedicated-network.yaml b/code/API_definitions/dedicated-network.yaml
index ec0f6e5..841a41a 100644
--- a/code/API_definitions/dedicated-network.yaml
+++ b/code/API_definitions/dedicated-network.yaml
@@ -24,6 +24,9 @@ paths:
         - Networks
       summary: Get a list of dedicated networks
       operationId: listNetworks
+      security:
+        - oAuth2:
+            - dedicated-network:networks:read
       parameters:
         - $ref: "#/components/parameters/x-correlator"
       responses:
@@ -52,6 +55,9 @@ paths:
         - Networks
       summary: Request to create a dedicated network
       operationId: createNetwork
+      security:
+        - oAuth2:
+            - dedicated-network:network:create
       requestBody:
         required: true
         content:
@@ -137,6 +143,9 @@ paths:
         - Networks
       summary: Get the current information about a dedicated network
       operationId: readNetwork
+      security:
+        - oAuth2:
+            - dedicated-network:network:read
       parameters:
         - name: networkId
           in: path
@@ -158,8 +167,11 @@ paths:
     delete:
       tags:
         - Networks
-      summary: Destroy a dedicated network
+      summary: Delete a dedicated network
       operationId: deleteNetwork
+      security:
+        - oAuth2:
+            - dedicated-network:network:delete
       parameters:
         - name: networkId
           in: path
@@ -185,6 +197,17 @@ paths:
 
 components:
   securitySchemes:
+    oAuth2:
+      type: oauth2
+      flows:
+        clientCredentials:
+          tokenUrl: https://api.example.com/oauth/token
+          scopes:
+            dedicated-network:networks:read: Get a list of networks
+            dedicated-network:network:create: Create a dedicated network
+            dedicated-network:network:read: Get the current information about a network
+            dedicated-network:network:delete: Delete a Network
+
     notificationsBearerAuth:
       description: Bearer authentication for notifications
       type: http