Security issues are consuming network executives' thoughts, although not necessarily dictating their spending priorities, according to the ninth annual Network World 500 survey.

Securing the corporate network, improving disaster-recovery systems and building VPNs accounted for three of the top five most important issues among network executives interviewed. Security-related issues also were rated high last year, though these issues took even greater urgency this year in the wake of the Sept. 11 terrorist attacks.

Rounding out the top five issues this year were improving existing network infrastructure to boost productivity and addressing the needs of remote offices and teleworkers.

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