diff --git a/src/grpc/server.rs b/src/grpc/server.rs
index 8830c21..626533e 100644
--- a/src/grpc/server.rs
+++ b/src/grpc/server.rs
@@ -93,7 +93,14 @@ impl NodeServer {
 
                 let conn = if let Err(e) = conn {
                     println!("Error accepting TLS connection: {e}");
-                    if e.to_string().contains("HandshakeFailure") {
+                    let attack_error_messages = [
+                        "HandshakeFailure",
+                        "peer sent no certificates", // "NoCertificatesPresented",
+                        "Not found quote extension",
+                    ];
+
+                    let err_str = e.to_string();
+                    if attack_error_messages.iter().any(|att_er_str| err_str.contains(att_er_str)) {
                         state.increase_net_attacks().await;
                     }
                     return;