Citigroup pegs hacker loss at $2.7 million

U.S. banking giant CitiGroup Inc. said that a recent breach of its computer system has resulted in a loss of $2.7 million for about 3,400 customers.

The bank reported the breach on June 9, and said that data required to commit fraud was not stolen, The Wall Street Journal reported Saturday.

But the hackers, who stole names, credit card account numbers and e-mail addresses, could have matched the Citigroup data with information stolen elsewhere.