diff --git a/lib/intercept.js b/lib/intercept.js
index faa4d0a..2455410 100644
--- a/lib/intercept.js
+++ b/lib/intercept.js
@@ -349,6 +349,39 @@
 								
 								Object.defineProperty(object, name, descriptor);
 							}
+							else if (
+								changedGetter.valueGenerator &&
+								descriptor && descriptor.hasOwnProperty("value")
+							){
+								const protectedAPIFeatures = prefs("protectedAPIFeatures");
+								if (
+									functionStatus.active &&
+									(
+										!protectedAPIFeatures.hasOwnProperty(name) ||
+										protectedAPIFeatures[name]
+									)
+								){
+									switch (functionStatus.mode){
+										case "ask": case "block": case "fake":
+											descriptor.value = changedGetter.valueGenerator({
+												mode: functionStatus.mode,
+												original: descriptor.value,
+												notify: function notifyCallback(messageId){
+													notify({
+														url: getURL(window),
+														errorStack: (new Error()).stack,
+														messageId,
+														timestamp: new Date(),
+														functionName: name,
+														api: changedGetter.api
+													});
+												}
+											});
+											Object.defineProperty(object, name, descriptor);
+											break;
+									}
+								}
+							}
 							else {
 								logging.error("Try to fake non getter property:", changedGetter);
 							}
diff --git a/lib/modifiedWindowAPI.js b/lib/modifiedWindowAPI.js
index e9d94d6..7cc6533 100644
--- a/lib/modifiedWindowAPI.js
+++ b/lib/modifiedWindowAPI.js
@@ -36,6 +36,12 @@
 					}
 				};
 				return Object.getOwnPropertyDescriptor(temp, "opener").get;
+			},
+			valueGenerator: function({original, notify}){
+				if (original !== null){
+					notify("fakedWindowReadout");
+				}
+				return null;
 			}
 		},
 		{