Hacker Reveals How Devastating A Cyberattack On The Stock Market Could Be

Of all the horrifying scenarios that hackers could pull off — from launching nukes to spoofing air traffic control — the one that poses the biggest risk for Wall Street would be a cyber attack on equity markets.
In the summer issue of hacker magazine 2600, pseudonymous writer "Eightkay" shows how such a scenario could pan out:

Now imagine this attack scenario. Agents of an enemy of the United States successfully break into the mainframes of a High Frequency Trading Company, Dark Pool Crossing Network, or Brokerage Company. They infect the system with rogue trading algorithms or change the code on currently deployed algorithms. In a single coordinated attack, they buy and sell millions of shares of a single company or multiple companies, causing trading to halt or decimating the value of a single stock. Multiply that by 100 stocks of the top Fortune 500 companies and we have market collapse. Trading for the day would halt and Uncalculated economic damage would be done.

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