diff --git a/user.js b/user.js
index 36693da..173d91e 100644
--- a/user.js
+++ b/user.js
@@ -276,6 +276,9 @@ user_pref("browser.safebrowsing.provider.google4.reportPhishMistakeURL", ""); //
  * [TEST] see github wiki APPENDIX C: Test Sites: Section 5
  * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1226490 ***/
    // user_pref("browser.safebrowsing.allowOverride", false);
+/* 0417: disable data sharing (FF58+) ***/
+user_pref("browser.safebrowsing.provider.google4.dataSharing.enabled", false);
+user_pref("browser.safebrowsing.provider.google4.dataSharingURL", "");
 /** TRACKING PROTECTION (TP)
     There are NO privacy concerns here, but we strongly recommend to use uBlock Origin as well,
     as it offers more comprehensive and specialized lists. It also allows per domain control. ***/