diff --git a/src/bluetooth.service.in b/src/bluetooth.service.in
index f9faaa4..7c2f60b 100644
--- a/src/bluetooth.service.in
+++ b/src/bluetooth.service.in
@@ -12,8 +12,14 @@ NotifyAccess=main
 #Restart=on-failure
 CapabilityBoundingSet=CAP_NET_ADMIN CAP_NET_BIND_SERVICE
 LimitNPROC=1
+
+# Filesystem lockdown
 ProtectHome=true
 ProtectSystem=full
+PrivateTmp=true
+
+# Privilege escalation
+NoNewPrivileges=true
 
 [Install]
 WantedBy=bluetooth.target