diff --git a/simlib/mixnet-sims/src/node/mix/mod.rs b/simlib/mixnet-sims/src/node/mix/mod.rs
index b891c1d..5133029 100644
--- a/simlib/mixnet-sims/src/node/mix/mod.rs
+++ b/simlib/mixnet-sims/src/node/mix/mod.rs
@@ -192,6 +192,8 @@ impl MixNode {
                 step_id: 0,
                 data_messages_generated: HashMap::new(),
                 data_messages_fully_unwrapped: HashMap::new(),
+                accum_num_inbound_messages: 0,
+                accum_num_outbound_messages: 0,
             },
             data_msg_lottery_update_time_sender,
             data_msg_lottery_interval,
@@ -220,13 +222,15 @@ impl MixNode {
             .filter(|&id| Some(*id) != exclude_node)
         {
             self.network_interface
-                .send_message(*node_id, message.clone())
+                .send_message(*node_id, message.clone());
+            self.state.accum_num_outbound_messages += 1;
         }
     }
 
     fn receive(&mut self) -> Vec<NetworkMessage<MixMessage>> {
-        self.network_interface
-            .receive_messages()
+        let received_messages = self.network_interface.receive_messages();
+        self.state.accum_num_inbound_messages += received_messages.len();
+        received_messages
             .into_iter()
             // Retain only messages that have not been seen before
             .filter(|msg| self.message_cache.insert(Self::sha256(&msg.payload().0)))
diff --git a/simlib/mixnet-sims/src/node/mix/state.rs b/simlib/mixnet-sims/src/node/mix/state.rs
index 4f450b6..db68883 100644
--- a/simlib/mixnet-sims/src/node/mix/state.rs
+++ b/simlib/mixnet-sims/src/node/mix/state.rs
@@ -16,8 +16,12 @@ pub struct MixnodeState {
     #[serde(serialize_with = "serialize_node_id_as_index")]
     pub node_id: NodeId,
     pub step_id: usize,
+    // For latency measurement
     pub data_messages_generated: HashMap<PayloadId, usize>,
     pub data_messages_fully_unwrapped: HashMap<PayloadId, usize>,
+    // For anonymity measurement
+    pub accum_num_inbound_messages: usize,
+    pub accum_num_outbound_messages: usize,
 }
 
 #[derive(Serialize)]