After decades of responding to tips about fraud by writing notes on napkins and then throwing them away, the Securities and Exchange Commission finally got itself some computers and is excited to put them to use. Legitimate use. First up: figure out if maybe the computers are in fact the problem. U.S. securities regulators have taken the unprecedented step of asking high-frequency trading firms to hand over the details of their trading strategies, and in some cases, their secret computer codes. The requests for proprietary code and algorithm parameters by the Financial Industry Regulatory Authority (FINRA), a Wall ... (full story)