The most famous - and biggest - financial scandal of this type in human history was the collapse of the Bank for Credit and Commerce International LTD. (BCCI) in London in 1991. For almost a decade, the management and employees of this shady bank engaged in stealing and misappropriating 10 billion (!!!) USD. The supervision department of the Bank of England, under whose scrutinizing eyes this bank was supposed to have been - was proven to be impotent and incompetent. The owners of the bank - some Arab Sheikhs - had to invest billions of dollars in compensating its depositors. The combination of black money, shoddy financial controls, shady bank accounts and shredded documents proves to be quite elusive. It is impossible to evaluate the total damage in such cases. The third type is the most elusive, the hardest to discover. It is very common and scandal may erupt - or never occur, depending on chance, cash flows and the intellects of those involved. Financial institutions are subject to political pressures, forcing them to give credits to the unworthy - or to forgo diversification (to give too much credit to a single borrower). Only lately in South Korea, such politically motivated loans were discovered to have been given to the failing Hanbo conglomerate by virtually every bank in the country. The same may safely be said about banks in Japan and almost everywhere else. Very few banks would dare to refuse the Finance Minister's cronies, for instance. Some banks would subject the review of credit applications to social considerations. They would lend to certain sectors of the economy, regardless of their financial viability. They would lend to the needy, to the affluent, to urban renewal programs, to small businesses - and all in the name of social causes, which, however justified - cannot justify giving loans. This is a private case in a more widespread phenomenon: the assets (=loan portfolios) of many a financial institution are not diversified enough. Their loans are concentrated in a single sector of the economy (agriculture, industry, construction), in a given country, or geographical region. Such exposure is detrimental to the financial health of the lending institution. Economic trends tend to develop in unison in the same sector, country, or region. When real estate in the West Coast of the USA plummets - it does so indiscriminately. A bank, whose total portfolio is composed of mortgages to West Coast Realtors, would be demolished.