All of them? Boiler rooms and stock frauds don't settle for a little bit of money, when they find someone to swindle, they take all of their money. It got so bad during the Great Depression that people actually hung bankruptcy judges.. Google "stock market fraud life savings" and you can find a litany of people who lost everything to these scams.
Do you have any actual examples? I googled your suggested term and found a bunch of people outside the US(lots in China a few in the UK, one in Canada) and a bunch of others who wouldn't qualify as accredited investors.
The great depression started before the SEC existed and was a completely different world.
Back to my original question I asked if it was easy to find examples. I have no doubt that you can find a few since fraud happens. But I think you'll find it difficult to find more than a handful.
Some people lost a lot of money on prosper.com, and at least in some cases, it was known that it was money they couldn't really afford to lose. See e.g. this (and be sure to read the last comment): http://www.bloggingawaydebt.com/2007/01/would-you-lend-75000...
I've tried to find more up to date information on him since that post is over 7 years old now and can't. Do you have anything more current or more details on the user pensioner?
ericscc.com appears to be gone as well as any of the other prosper forums I've found links to. Not really familiar with the site so is it basically dead or moved out of p2p or something?
The one forum site that still seems to be active is prospers.org, where pensioner was active as late as 2014. Not much conversation about prosper anymore, though (The old timers still there have thoroughly soured on p2p lending).
prosper.com itself is still in business. AFAIK they have pivoted to a much more conservative lending model. People who invested before 2010 or so generally lost money, some of them a lot of it, but the current model may be sustainable.
http://www.thedailybeast.com/articles/2015/10/31/the-best-co...
Or the boiler rooms & microcap fraud in the 1980s/1990s:
https://en.wikipedia.org/wiki/Microcap_stock_fraud
And yep, it was still happening even before the accredited investor criteria was relaxed;
https://www.justice.gov/usao-sdfl/pr/five-defendants-charged...