Citigroup hacked by Russian cyber gang, millions stolen.

From ABC News:

In a bizarre case of cyber crime, the Wall Street Journal reported today that Russian hackers may have stolen tens of millions of dollars from Citigroup, a charge the bank denies.

Citing anonymous government officials, the newspaper reported that the hackers were connected to a Russian cyber gang and that two other computer systems, at least one connected to a U.S. government agency, were also attacked. The FBI is investigating the case, according to the Wall Street Journal, but the company has flatly denied the story.

"We had no breach of the system and there were no losses, no customer losses, no bank losses," the banking giant said in a statement. "Any allegation that the FBI is working a case at Citigroup involving tens of millions of losses is just not true."