The US government has asked for international assistance, including from China, in tackling hack attacks from North Korea.
The request to China follows the assault on Sony Pictures Entertainment, which the US believes originated in North Korea.
Associated Press quoted a source who claimed that the US and Chinese administrations have discussed the issue of cyber attacks, but not publically.
However, the Chinese government does not appear to be siding with the US. Other reports say that the country is carrying out its own studies, denying suggestions of North Korean involvement and not acknowledging the US request.
A report on Reuters has comments from Chinese foreign ministry spokeswoman Hua Chunying confirming a meeting with US secretary of state John Kerry but refusing to blame North Korea at this stage.
"Before making any conclusions there has to be a full [accounting of] the facts and foundation," said Hua. "China will handle it in accordance with relevant international and Chinese laws according to the facts."
North Korea has denied its involvement in the hack, and has asked the US to stop making baseless and unsupported allegations against the country.
A statement posted on the official North Korean news agency urged the US to "apologise to mankind" for the accusations.
"US president Obama is recklessly making the rumour about '[North Korea's] cyber-attack on Sony Pictures' a fait accompli while crying out for symmetric counteraction, strict calculation and additionally retaliatory sanctions," it said.
"A saying goes: every sin brings its punishment. It is best for the guilty to repent of evil doings and draw a lesson when forced to pay dearly for them.
"The facts glaringly show that the US is the chief culprit of terrorism as it has loudly called for combating terrorism everywhere in the world but schemed behind the scene to produce and distribute movies inciting it in various countries of the world."
President Obama has softened the wording used to describe the hack attack, calling it "digital vandalism".
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