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diff --git a/lib/js_checker/privacy_checker.js b/lib/js_checker/privacy_checker.js
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+++ b/lib/js_checker/privacy_checker.js
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+/**
+ * GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript.
+ * *
+ * Copyright (C) 2011, 2012, 2013, 2014 Loic J. Duros
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see  <http://www.gnu.org/licenses/>.
+ *
+ */
+
+const privacyThreatJs = require('js_checker/privacy_threat_definitions.js');
+const patternUtils = require('js_checker/pattern_utils').patternUtils;
+
+exports.privacyCheck = {
+    checkScriptPrivacyThreat: function (currentScript) {
+        var list = privacyThreatJs.js;
+        var i;
+        var item;
+        var max;
+
+        currentScript = patternUtils.removeWhitespace(currentScript);
+
+        for (item in list) {
+            max = list[item].length;
+
+            for (i = 0; i < max; i++) {
+                if (list[item][i].test(currentScript)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+};