Every morning, Gregor Bailar, executive vice president of operations and technology and CIO of NASDAQ, pores over the previous day's security report. "We have hundreds of different types of hacking and other security attempts in any given week," he says. . . .
Every morning, Gregor Bailar, executive vice president of operations and technology and CIO of NASDAQ, pores over the previous day's security report. "We have hundreds of different types of hacking and other security attempts in any given week," he says.

At the moment, Bailar's not so much worried about a breach of NASDAQ's trading system -- a private network of computers secured behind a tank embankment wall -- but about the potential damage in dollars and investor confidence should one of the exchange's public Web sites go down.

Like many senior technologists, Bailar makes decisions about risk management every day. Unlike most CIOs, however, he's got the backing to make his decisions stick. Those resources include two dedicated security teams, a direct pipeline to national security personnel, armed security guards, and a total budget of $450 million.

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