What does Google know about its users and how does it know it? European privacy regulators on Tuesday warned the company to clarify those issues — or risk fines or other penalties by early next year. In a letter to Larry Page, the chief executive of Google, 27 European data-protection agencies asked the company to modify its global privacy policy that governs dozens of Google online services — including the flagship search engine, Android mobile phone apps and YouTube videos — so that users have a clearer understanding of what personal data is being collected and can better control how that information is shared with advertisers. Read More