Hackers have sent a new email to Sony Pictures Entertainment, gloating over the studio’s “wise” decision to cancel the release of The Interview and warning not to distribute the film “in any form.”

An email was sent to the firm on Friday reading: “Very wise to cancel ‘The interview’ it will be very useful for you. We ensure the purity of your data and as long as you make no more trouble.”

It was sent to several employees of Sony, based in Culver City, California, which has been bit by the hacking group calling itself Guardians of Peace.

The email also warned against any release of the Seth Rogen and James Franco comedy and insisted that “anything related to the movie, including trailers” be removed from the internet.

“Now we want you never let the movie released, distributed or leaked in any form of, for instance, DVD or piracy,” wrote the hackers.

Sony Pictures has been removing all signs of “The Interview” from its websites and taken its trailers off YouTube.

The Obama administration on Friday formally accused the North Korean government of being responsible for the devastating hacking attack.