Investigators probing the major data breack at JPMorgan Chase & Co have found clues that show the hackers used a global network of computers available for hire to reroute the stolen data from the bank to a large Russian city. According to reports these hackers, using a computer network staging ground, called a ‘bulletproof’ hosting stage platform, because of its fortress-like security to keep out law enforcement agencies and other cybercriminals, took over computer systems around the world, from South America to Asia, sending commands and hiding their identity to break into one of the most heavily guarded financial networks. Professional cybercriminals operating out of Eastern Europe, with the help of a group of computers used in previous attacks, are now targeting banks, the reports said, adding the FBI and the National Security Agency are among those trying to investigate the origin of the attack on JPMorgan. However, not all of the investigators hired by the bank to investigate the fraud are fully convinced Russia could be behind the attack.