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North Korea Denies Involvement In Sony Hack, But Offers To Help Investigate

Pyongyang has labeled U.S. government claims that it was responsible for the hack as "groundless and slanderous."

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In a Foreign Ministry statement reported by the BBC, North Korea alluded to the recently released U.S. Senate report on CIA torture. "Without resorting to such tortures as were used by the U.S. CIA, we have means to prove that this incident has nothing to do with us," the statement read.

North Korea has proposed a "joint inquiry" into the hack, saying the U.S. faces "serious consequences" if it rejects this offer.

In a statement released Friday, the FBI presented its evidence for accusing North Korea:

· Technical analysis of the data deletion malware used in this attack revealed links to other malware that the FBI knows North Korean actors previously developed. For example, there were similarities in specific lines of code, encryption algorithms, data deletion methods, and compromised networks.

· The FBI also observed significant overlap between the infrastructure used in this attack and other malicious cyber activity the U.S. Government has previously linked directly to North Korea. For example, the FBI discovered that several Internet protocol (IP) addresses associated with known North Korean infrastructure communicated with IP addresses that were hardcoded into the data deletion malware used in this attack.

· Separately, the tools used in the SPE attack have similarities to a cyber attack in March of last year against South Korean banks and media outlets, which was carried out by North Korea.

Sony pulled The Interview from release after threats were made against theaters showing the film, which details a fictional attempt to assassinate North Korean leader Kim Jong Un.

President Obama on Friday labeled that decision "a mistake."

"We cannot have a society in which some dictator someplace can start imposing censorship here in the United States," Obama said.

Sony has since said it was only complying with theaters who felt the risk of attack was too high.

It said its intent is not to scrap the film, but to have it released "on a different platform."

U.S. National Security spokesman Mark Stroh told the BBC later on Saturday that Washington remains confident North Korea was behind the attack.

"If the North Korean government wants to help, they can admit their culpability and compensate Sony for the damages this attack caused," Stroh said.

Lindsey Adler is a sports reporter for BuzzFeed News and is based in New York.

Contact Lindsey Adler at lindsey.adler@buzzfeed.com.

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