--- a/browser/components/enterprisepolicies/Policies.jsm
+++ b/browser/components/enterprisepolicies/Policies.jsm
@@ -296,16 +296,20 @@ var Policies = {
       if (param) {
         manager.disallowFeature("safeMode");
       }
     }
   },
 
   "DisableSecurityBypass": {
     onBeforeUIStartup(manager, param) {
+      if ("InvalidCertificate" in param) {
+        setAndLockPref("security.certerror.hideAddException", param.InvalidCertificate);
+      }
+
       if ("SafeBrowsing" in param) {
         setAndLockPref("browser.safebrowsing.allowOverride", !param.SafeBrowsing);
       }
     }
   },
 
   "DisableSysAddonUpdate": {
     onBeforeAddons(manager, param) {

--- a/browser/components/enterprisepolicies/schemas/policies-schema.json
+++ b/browser/components/enterprisepolicies/schemas/policies-schema.json
@@ -242,16 +242,20 @@
     },
 
     "DisableSecurityBypass": {
       "description": "Prevents the user from bypassing certain security warnings.",
       "first_available": "60.0",
 
       "type": "object",
       "properties": {
+        "InvalidCertificate": {
+          "type": "boolean"
+        },
+
         "SafeBrowsing": {
           "type": "boolean"
         }
       }
     },
 
     "DisableSysAddonUpdate": {
       "description": "Prevent the browser from installing and updating system addons.",

--- a/browser/components/enterprisepolicies/tests/browser/browser_policies_simple_pref_policies.js
+++ b/browser/components/enterprisepolicies/tests/browser/browser_policies_simple_pref_policies.js
@@ -38,20 +38,24 @@ const POLICIES_TESTS = [
     policies: { "RememberPasswords": true },
     lockedPrefs: { "signon.rememberSignons": true },
   },
 
   // POLICY: DisableSecurityBypass
   {
     policies: {
       "DisableSecurityBypass": {
+        "InvalidCertificate": true,
         "SafeBrowsing": true
       }
     },
-    lockedPrefs: { "browser.safebrowsing.allowOverride": false },
+    lockedPrefs: {
+      "security.certerror.hideAddException": true,
+      "browser.safebrowsing.allowOverride": false,
+    },
   },
 
 
   // POLICY: DisableFormHistory
   {
     policies: { "DisableFormHistory": true },
     lockedPrefs: { "browser.formfill.enable": false },
   },