Cyberattack caused the printing and distribution of Los Angeles Times and other major US newspapers on Saturday, such as Tribune Publishing Co, such as the Chicago Tribune and Baltimore Sun.
Cyberattack appeared outside of the United States, reported in the Los Angeles Times, citing a source for the state's knowledge.
Attack delays occurred in newspapers that share a Los Angeles, Los Angeles Times newspaper, Tribune, Sun magazine and Los Angeles production platform.
Tribune Publishing also mentions malware on Friday that newspapers from New York Daily and Orlando Sentinel have said.
The Wall Street Journal and the West Coast Magazine of the New York Times have also been featured in a shared production platform, as the Los Angeles Times said.
U.S. investigating authorities
Tribuna Publisher spokeswoman Marisa Kollias has said that the virus is suffering from back-office systems that use viruses to "publish newspapers in our properties".
"There is no evidence of the risk of identifying customer credit card information or personal information," said Kollias
The Wall Street Journal and the New York Times did not immediately respond to comment requests.
Many of the San Diego Union-Tribune subscribers had the virus without day-to-day virus infected the company's business systems and advertised the advertising capabilities, the paper editor and publisher Jeff Light wrote on his website.
A spokeswoman for the United States Security Court said he was considering the situation.
"We are informed about potential cyber events that affect news outlets, and our governments and industry partners are collaborating to better understand the situation," said DHS spokeswoman Katie Waldman in a statement.