diff --git a/authorization/src/main/java/com/ship/authorization/controller/AuthorizationController.java b/authorization/src/main/java/com/ship/authorization/controller/AuthorizationController.java
index dbfa0d8..29ba319 100644
--- a/authorization/src/main/java/com/ship/authorization/controller/AuthorizationController.java
+++ b/authorization/src/main/java/com/ship/authorization/controller/AuthorizationController.java
@@ -26,6 +26,16 @@
 
 @RestController
 public class AuthorizationController {
+
+    const String admiral = "ADMIRAL";
+    const String vice_admiral = "VICE_ADMIRAL";
+    const String captain = "CAPTAIN";
+    const String commander = "COMMANDER";
+    const String lieutenant ="LIEUTENANT";
+    const String ensign = "ENSIGN";
+    const String crewman = "CREWMAN";
+    const String[] ranks = {admiral, vice_admiral, captain, commander, lieutenant, ensign, crewman};
+
     @Autowired
     private UsersService usersService;
 
@@ -38,7 +48,12 @@ public void checkAccess(Authentication authentication, @RequestBody ActionDto ac
         String recipientRole = usersService.loadUserRole(actionDto.getRecipient());
         System.out.println("Role: " + recipientRole);
 
+
         for (GrantedAuthority grantedAuthority : userDetails.getAuthorities()){
+
+            if (RankDifference(grantedAuthority.getAuthority(), recipientRole) + 1 < 0) {
+                throw new ForbiddenAccessException();
+            }
             if (grantedAuthority.getAuthority().equals(ROLE_CREWMAN)) {
                 if (recipientRole.contains(ROLE_ADMIRAL)) {
                     throw new ForbiddenAccessException();
@@ -46,4 +61,23 @@ public void checkAccess(Authentication authentication, @RequestBody ActionDto ac
             }
         }
     }
+
+
+    private int RankDifference(String rank1, String rank2)
+    {
+        int rank1Level = 0;
+        int rank2Level = 0;
+        for (int i = 0; i < ranks.length; ++i)
+        {
+            if (ranks[i] == rank1)
+            {
+                rank1Level = i;
+            }
+            if (ranks[i] == rank2)
+            {
+                rank2Level = i;
+            }
+        }
+        return rank1Level - rank2Level;
+    }
 }
\ No newline at end of file
diff --git a/communication/src/main/java/com/ship/communication/controller/MessageController.java b/communication/src/main/java/com/ship/communication/controller/MessageController.java
index 1d3d87a..c2e4e4a 100644
--- a/communication/src/main/java/com/ship/communication/controller/MessageController.java
+++ b/communication/src/main/java/com/ship/communication/controller/MessageController.java
@@ -22,7 +22,6 @@
 
 @RestController
 public class MessageController {
-
     @Autowired
     private DiscoveryClient discoveryClient;
 
@@ -54,13 +53,14 @@ private void checkAccess(ActionDto actionDto, String session) {
         ServiceInstance service = discoveryClient.getInstances("authorization").get(0);
         String url = "http://" + service.getHost() + ":" + service.getPort() + "/" + "checkAccess";
 
+        String sender = actionDto.getSender();
         String requestJson = "{\"recipient\":\"" + actionDto.getRecipient() + "\"}";
         HttpHeaders headers = new HttpHeaders();
         headers.setContentType(MediaType.APPLICATION_JSON);
         headers.add("Cookie", "SESSION=" + session);
 
-        HttpEntity<String> entity = new HttpEntity<String>(requestJson,headers);
+        HttpEntity<String> entity = new HttpEntity<String>(requestJson, headers);
         restTemplate.postForObject(url, entity, String.class);
+        // TODO envoyer notif au recipient
     }
-
 }