I have an uncle who actually audited a large org and found evidence of fraud. Each time something weird was found, he investigated, and alsmot each time fraud of some sort was involved. Pressure increased as the time passed, from all side (especially below, as he was near the top of that bank, but from the side too).
He and his team were physically threatened and had to have bodyguards (actually, it was cops, but they acted as bodyguards). In the early 2000s he decided to call it quit, after 8 years. He told us that the weirdest fraud of all was money laundering, as it was at the same time the easiest and the hardest to prove, depending on who did it.
All that to say actually finding fraud is hard, proving it is even harder, and can be dangerous even for lower orgs, so i won't criticize Oxfam for letting it rest where it is.
He and his team were physically threatened and had to have bodyguards (actually, it was cops, but they acted as bodyguards). In the early 2000s he decided to call it quit, after 8 years. He told us that the weirdest fraud of all was money laundering, as it was at the same time the easiest and the hardest to prove, depending on who did it.
All that to say actually finding fraud is hard, proving it is even harder, and can be dangerous even for lower orgs, so i won't criticize Oxfam for letting it rest where it is.