Simple - never put all your savings into one fund/manager/asset. The crazy thing about the Madoff scandal is how many people gave him *all* their savings to manage. Hello? It almost makes me wonder whether these people should be committed to a lunatic asylum. There is always a risk of fraud, scam, negligence, poor performance or just bad luck busting out any given investment. Putting all your eggs in one basket is just insane. What's crazier is that there were clear red flags for anyone who did basic due diligence. What kind of person invests every cent without even doing basic research? Utter lunacy. Make sure you never make the same mistake as these chumps.