5. Symantec Cans Salem
While much of the IT security industry was focused on the Black Hat event in Las Vegas, Symantec ousted CEO Enrique Salem (pictured), a long-time veteran of the company who had served as its chief executive for three years. But with earnings down nearly 10 percent, the board opted in favor of its chairman, Steve Bennett, who assumed both roles. Bennett joined Symantec's board in February 2010 and became chairman in 2011. The following quarter, Symantec posted modestly better numbers, but the executive changes continued with the departure of William Robbins, executive vice president of worldwide sales.