Microsoft has added a filter to its geographic location database to block unauthorised queries. The database contains observations of MAC addresses, detected signal strengths and Wi-Fi standards used by countless individual access points. A hacker Elie Bursztein will present a description of his hack at the Black Hat Conference in Las Vegas on Wednesday (3 August) Microsoft’s fast response should ensure that the security hole won’t create a privacy threat for the company’s database. Other services such as Google, Apple or Skyhook have had to deal with security holes in the past.”]