Film star George Clooney has slammed the Hollywood movie industry for failing to stand up against the cyber threats that prompted Sony Pictures to cancel release of the movie “The Interview.”

Clooney, one of the most influential figures in the US movie industry, said in an interview that fellow celebrities and industry figures declined to sign a petition he circulated in support of the satirical comedy, whose Christmas Day release has been scrapped.

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No one, the actor said, was brave enough to sign the petition, out of fear that doing so could make them vulnerable to a hacking attack like the one that befell Sony.

“It was a large number of people. It was sent to basically the heads of every place,” Clooney said in an interview published Friday by the entertainment news website “Deadline.”

To a person, the reply was “‘I can’t sign this’,” he said.

Clooney’s petition decried the “chilling and devastating” cyber attack that revealed thousands of emails, scripts, and personal data at Sony, but said the implications go far beyond the company.

“This is not just an attack on Sony. It involves every studio, every network, every business and every individual in this country,” Clooney’s petition read, as published by Deadline.

“We know that to give in to these criminals now will open the door for any group that would threaten freedom of expression, privacy and personal liberty,” it added, urging Hollywood to “stand together.”

“The Interview,” starring James Franco and Seth Rogen and depicting a fictional plot to assassinate North Korean dictator Kim Jong-Un, had been due to hit US cinemas on December 25.

But Sony Pictures canceled its release of the satirical comedy after threats from hackers, causing widespread consternation in the movie world and triggering concerns about freedom of expression.

Warnings from the so-called Guardians of Peace hacking group invoked the September 11, 2001 attacks, prompting a number of US cinema chains to cancel plans to screen the film.

Clooney criticised the decision to yank the movie.

“You have someone threaten to blow up buildings, and all of a sudden everybody has to bow down,” he told Deadline.

“Sony … pulled the movie because all the theatres said they were not going to run it. And they said they were not going to run it because they talked to their lawyers and those lawyers said if somebody dies in one of these, then you’re going to be responsible,” Clooney said.

“This is a silly comedy, but the truth is, what it now says about us is a whole lot. We have a responsibility to stand up against this.”