Today, the Wall Street Journal reported, "The Federal Bureau of Investigation is probing a computer-security breach targeting Citigroup Inc. that resulted in a theft of tens of millions of dollars by computer hackers who appear linked to a Russian cyber gang, according to government officials." And the attack allegedly focused on Citibank.

The WSJ also points out that the government has a 27% stake in the bank, but Citi's managing director of Security and Investigative Services Joe Petro said, "We had no breach of the system and there were no losses, no customer losses, no bank losses. Any allegation that the FBI is working a case at Citigroup involving tens of millions of losses is just not true." The bank also issued a statement, restating that the report was untrue, "Occasionally, as with virtually all financial institutions, there are instances of fraud or breaches of third-party systems that result in our taking actions to protect our customers and Citi. However, contrary to the Wall Street Journal report today, there has been no breach of Citi’s systems."

The WSJ is standing by its story. ABC News said its government sources "could not confirm... whether reports about Citigroup are entirely true but instead said 'the truth here is somewhere in the middle.'"