All media reported it, but it was an seriously effective hoax.
The success of the hoax depends on the military psycological operation approach used by the guys that made it and reported that all was only an experiment.
The reporter suggested to download and mirror several documents from US government explaining Psycological Operation military methodologies and tactics to modify the informations trough the media.
http://insecure.org/ report the email on a mailing list with which the hacker revealed the hack to the company printing harry potter book.
Their reporting after the news diffusion on the psycological operation success and description of what we called, until now, an hoax http://lists.grok.org.uk/pipermail/full-disclosur
It's impressive how they did it and how exists tactics to modify the mass media information.