Xavier Justo is a retired Swiss banker and the 1MDB whistle blower. In 2011, Justo had handed a British journalist named Clare Rewcastle Brown thousands of documents, including 227,000 emails, from the servers of his former employer, PetroSaudi, which appeared to shed light on the alleged theft of hundreds of millions of dollars from a state-owned Malaysian investment fund known as 1MDB. The documents that Justo leaked have set off a chain reaction of investigations in at least half a dozen co ...