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Report: Russian gang linked to big Citibank hack
It was not known whether the money had been recovered and a Citibank representative said the company had not had any system breach or losses, according to the report.
The report left unclear who the money was stolen from but said a program called Black Energy, designed by a Russian hacker, was one tool used in the attack. The tool can be used to command a botnet, or a large group of computers infected by malware and controlled by an attacker, in assaults meant to take down target Web sites. This year a modified version of the software appeared online that could steal banking information, and in the Citi attack a version tailored to target the bank was used, the Journal said.
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