The Swiss Leaks scandal broke out in 2015 when the International Consortium of Investigative Journalists (ICIJ) exposed 60,000 leaked files with details about more than 100,000 clients of the bank HSBC in Switzerland. Among other things, the data allegedly showed how HSBC was helping clients set up secret bank accounts to hide fortunes from tax authorities around the world, and assisting individuals engaged in arms trafficking, blood diamonds and corruption to hide their illicitly acquired assets (source).