U.S. officials say they believe that North Korea’s government was involved in the large-scale hack of Sony servers, which led to the leak of troves of Sony data from emails to unreleased projects, according to the NYT.

Federal cyber-security sources say that there is evidence indicating that the hack was routed through computers in Singapore, Thailand, Italy, Bolivia and Cyprus, ABC reports.

While the hack resulted in a dump of Sony data, including email, confidential materials, and unreleased projects, it also specifically targeted The Interview, a movie featuring Seth Rogen and James Franco. The theory that North Korea was behind the attack was initially dismissed when North Korea publicly denied involvement, but official sources believe that the North Korean government was “centrally involved” in the attacks.

The New York Times reports that officials aren’t going on the record, and are unsure whether or not the White House will publicly accuse Kim Jong Un and North Korea of the attack. The hackers’ methodology is highly reminiscent of tactics used by Anonymous — timed dumps of sensitive data, DDOS attacks, etc. — which have thus far clouded the investigation.

The Interview, which depicts the assassination attempt of Kim Jong Un, was slotted to be released on Christmas Day until Sony was forced to pull the movie. Amid 9/11-referencing threats from the hacker organization, which called itself the Guardians of Peace, five of the major theater chains said they would not show the film, leading Sony to pull back entirely.

Source: http://techcrunch.com/2014/12/17/us-officials-believe-north-korea-was-involved-in-sony-hacks/