diff --git a/squinnondation/hazel.py b/squinnondation/hazel.py
index 8ebec48..d11aeea 100644
--- a/squinnondation/hazel.py
+++ b/squinnondation/hazel.py
@@ -709,7 +709,6 @@ class Worm(Thread):
         while True:
             try:
                 pkt, hazelnut = self.squirrel.receive_packet()
-                pkt.validate_data()
             except ValueError as error:
                 self.squirrel.add_system_message("An error occurred while receiving a packet: {}".format(error))
             else:
diff --git a/squinnondation/messages.py b/squinnondation/messages.py
index 2cf0fb4..55b43c0 100644
--- a/squinnondation/messages.py
+++ b/squinnondation/messages.py
@@ -75,7 +75,7 @@ class Pad1TLV(TLV):
 
     def handle(self, squirrel: Any, sender: Any) -> None:
         # TODO Add some easter eggs
-        squirrel.add_system_message("For each byte in the packet that I received, you will die today. And eat cookies.")
+        squirrel.add_system_message("I received a Pad1TLV, how disapointing.")
 
     def __len__(self) -> int:
         """
@@ -120,7 +120,7 @@ class PadNTLV(TLV):
 
     def handle(self, squirrel: Any, sender: Any) -> None:
         # TODO Add some easter eggs
-        squirrel.add_system_message(f"I received {self.length} zeros, am I so a bad guy ? :cold_sweat:")
+        squirrel.add_system_message(f"I received {self.length} zeros.")
 
     @staticmethod
     def construct(length: int) -> "PadNTLV":
@@ -173,7 +173,7 @@ class HelloTLV(TLV):
         # Add entry to/actualize the active hazelnuts dictionnary
         squirrel.activehazelnuts[(sender.address, sender.port)] = [sender, time_h, time_hl, True]
         squirrel.nbNS += 1
-        # squirrel.add_system_message(f"Aaaawwww, {self.source_id} spoke to me and said me Hello "
+        # squirrel.add_system_message(f"Aaaawwww, {self.source_id} spoke to me and said Hello "
         #                             + ("long" if self.is_long else "short"))
 
     @property
@@ -219,6 +219,9 @@ class NeighbourTLV(TLV):
             self.port.to_bytes(2, sys.byteorder)
 
     def handle(self, squirrel: Any, sender: Any) -> None:
+        if squirrel.address == str(self.ip_address) and squirrel.port == self.port :
+            #This case should never happen (and in our protocol it is not possible), but we include this test as a security measure. 
+            return 
         if not (str(self.ip_address), self.port) in squirrel.activehazelnuts \
                 and not (str(self.ip_address), self.port) in squirrel.potentialhazelnuts:
             squirrel.potentialhazelnuts[(str(self.ip_address), self.port)] = \
@@ -271,7 +274,7 @@ class DataTLV(TLV):
         squirrel.send_packet(sender, Packet.construct(AckTLV.construct(self.sender_id, self.nonce)))
 
         if not squirrel.receive_message_from(self, msg, self.sender_id, self.nonce, sender):
-            # The message was already received, do not print it
+            # The message was already received, do not print it on screen
             squirrel.add_system_message(f"I was inundated a message which I already knew {self.sender_id, self.nonce}")
             return