A Rogue Employee Might be On Your Payroll, Too So writes Sarah E. Needleman at the Wall Street Journal Law Blog, where she points out that small businesses tend to be more vulnerable to fraud than large firms: If a business as established and well off as UBS can suffer at the hands of one bad apple, could the same can be true for any business, even a small firm? According to various media reports, an alleged trading scheme at the Swiss investment bank went undetected for three years before it was finally discovered last week that a 31-year-old trader was apparently…