Microsoft today launches a fierce attack on Google over its "cavalier" approach to copyright, accusing the internet company of exploiting books, music, films and television programmes without permission.

Tom Rubin, associate general counsel for Microsoft, will say in a speech in New York that, while authors and publishers find it hard to cover costs, "companies that create no content of their own, and make money solely on the back of other people's content, are raking in billions through advertising and IPOs".