HN user
Kostolany became rich shorting. He wrote the worst of being a short-seller is that you are earning a lot of money while all your friends are losing it. You have to keep a low profile because everyone looks at you as the cause of their loses.
3. 1 month passes. The stock goes up.
You HAVE to buy the same amount of stock, but for $150.
You HAVE to return the stock to the person you borrowed it from.
You lost $50 per stock.
It seems to me a pretty mild security flaw one that requires local root privileges or even reflashing the BIOS to be exploited. I cannot think of a real world scenario where this can be a problem.