Video game developer Rovio has confirmed that hackers defaced its Angry Birds site with an image entitled Spying Birds, featuring an NSA logo. The attack followed the publication of leaks that indicated the US spy agency and its British counterpart GCHQ had obtained data released by at least one of the Finnish firm's games. The company said it did not "collaborate or collude" with any government spy agency. It added it had quickly fixed its site. "The defacement was caught in minutes and corrected immediately," said marketing manager Saara Bergstrom. "The end user data was in no risk at any point. Due to how the internet name resolution works, for most areas it was not visible at all, but some areas take time for the correct information to be updated. CHQ GCHQ says that its surveillance activities are "authorised, necessary and proportionate" "This attack looks to be similar to the New York Times attacks from last year."