Photo: Randy Le'Moine Photography/Flickr In an effort to crack down on hacker/stock traders who hijack brokerage accounts and exploit the stock market for gain, the Securities and Exchange Commission has, in a novel move, gone after four online trading companies and eight executives who they say helped a Latvian hacker make more than $850,000 from fraudulent trades. According to the complaint, filed by the SEC in federal court in San Francisco (.pdf), a 34-year-old individual using the name Igors Nagaicevs hijacked the online brokerage accounts of numerous customers over a 14-month period between June 2009 and August 2010 and began selling off ...