Harden the systemd service

module.nix

@@ -90,6 +90,17 @@ in
         ExecStartPre = "${strojnadzor}/bin/strojnadzor-admin migrate";
         ExecStart = "${strojnadzor}/bin/strojnadzor-admin runserver-gunicorn";
         StateDirectory = "strojnadzor";
+        LockPersonality = true;
+        NoNewPrivileges = true;
+        PrivateDevices = true;
+        RestrictNamespaces = true;
+        PrivateTmp = true;
+        ProtectControlGroups = true;
+        ProtectHome = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        ProtectSystem = "strict";
+        RestrictSUIDSGID = true;
       };
       environment.STROJNADZOR_DATA_DIR = "${cfg.stateDir}";
     };