A private security company has found a way to nuke the controversial callback component in Microsoft’s Windows Genuine Advantage anti-piracy tool. Firewall Leak Tester, a company that provides tools to test the quality of personal firewall software, has released a utility called RemoveWGA that blocks Microsoft from “phoning home” from Windows PCs on a daily basis. “Once the WGA Notification tool has checked your OS and has confirmed you had a legit copy, there is no decent point or reason to check it again and again every boot,” the company said in a note explaining its motive for releasing the tool.