Citing interviews with four anonymous sources, Bloomberg reports Russian hackers broke into Dow Jones & Co. servers a year or so ago and stole stock information before it was public. Dow Jones, which is part of News Corp and owns the Wall Street Journal, claims it's unaware of any such hack, despite the FBI confirming the incident to both Bloomberg and CNBC. "We are looking into whether there is any truth whatsoever to this report by a competitor news organization," Dow Jones says in a statement released to CNBC.
The FBI and Securities and Exchange Commission have spent months trying to figure out how hackers could profit from what they stole, concluding they were likely looking for stock tips contained in embargoed information and unpublished stories, Bloomberg reports. Dow Jones admitted to another cybersecurity breach last week in which hackers tried to get contact and payment information from around 3,500 customers. According to Bloomberg's sources, this new hack is more serious than the one Dow Jones addressed publicly. It's unclear if the two incidents are related. (Read more hackers stories.)