     private let urlsWhiteList = ["https://cdn.cliqz.com/anti-tracking/bloom_filter/",
                                  "https://cdn.cliqz.com/anti-tracking/whitelist/versioncheck.json",
                                  "https://cdn.cliqz.com/adblocking/mobile/allowed-lists.json"]
+    
+    let adBlockerLastUpdateDateKey = "AdBlockerLastUpdateDate"
     
     // MARK: - Local variables
     var privateMode = false

        return false
    }

    func setAdblockEnabled(value: Bool) {
        dispatch_async(dispatchQueue) {
            
            if value == true {
                self.extractAdblockerSeedFiles()
            }
            
            self.context.evaluateScript("CliqzUtils.setPref(\"\(self.adBlockPrefName)\", \(value ? 1 : 0));")
            self.context.evaluateScript("CliqzUtils.setPref(\"\(self.adBlockABTestPrefName)\", \(value ? true : false));")
        }
    }


        
        // block ads prefs
        if SettingsPrefs.getAdBlockerPref() {
            self.setAdblockEnabled(true, timeout: 100)
        }

        // startup
