Market security

HOW LONDON MAN MAY HAVE HELPED TRIGGER THE 'FLASH CRASH'

He operated from a modest suburban London home he shared with his parents, far from the city's glamorous financial center. He used off-the-shelf software anyone can buy.Yet, if U.S. authorities are correct, Navinder Singh Sarao, 36, managed to send a jolt of fear through the world's markets by helping to set off the 2010 "flash crash," in which the Dow Jones average plunged 600 points in less than seven minutes.