The BBC says that HSBC, the world's second largest bank, helped rich people to hide money so they would not have to pay tax. A BBC documentary programme got access at by for from in of to the details at by for from in of to thousands at by for from in of to private bank accounts, worth $128 billion, at by for from in of to an HSBC bank at by for from in of to Switzerland. The information was leaked at by for from in of to a whistleblower at by for from in of to 2007. It shows that HSBC helped its wealthy clients to evade tax. The whistleblower was a computer expert working at by for from in of to HSBC at by for from in of to Geneva. He stole the details at by for from in of to more than 100,000 clients worldwide. A French banking team looked at by for from in of to the stolen data at by for from in of to 2013. It concluded that 99.8% at by for from in of to French citizens on the list were probably evading tax. HSBC said the bank has changed a lot since 2007. It said: "HSBC has [put at by for from in of to place] numerous initiatives designed to prevent its banking services being used to evade taxes or launder money." The Guardian newspaper at by for from in of to the U.K. said HSBC told its reporters that the bank understood that it failed to follow the law properly. One woman who complained when the bank did not make changes lost her job. Sue Shelley was responsible at by for from in of to making sure HSBC followed the law. The BBC said that when she complained that the bank was not keeping its promise to change, the bank fired her. The BBC said HSBC is now facing criminal investigations at by for from in of to the USA, France, Belgium and Argentina.