diff --git a/settings/omegafox.cfg b/settings/omegafox.cfg
index 8cc3b83..fe555ad 100644
--- a/settings/omegafox.cfg
+++ b/settings/omegafox.cfg
@@ -701,4 +701,9 @@ defaultPref("fission.autostart", true);
 defaultPref("privacy.firstparty.isolate", true);
 defaultPref("privacy.partition.network_state", true);
 defaultPref("privacy.storagePrincipal.enabledForTrackers", true);
-defaultPref("privacy.partition.serviceWorkers", true);
\ No newline at end of file
+defaultPref("privacy.partition.serviceWorkers", true);
+
+// Clear cookies and site data on shutdown
+defaultPref("privacy.clearOnShutdown.cookies", true);
+defaultPref("privacy.clearOnShutdown.siteSettings", true);
+defaultPref("network.cookie.lifetimePolicy", 2);
\ No newline at end of file