Do you trust your company's friendly information-technology personnel not to read your e-mail? Maybe you shouldn't.

A survey of IT professionals revealed that one in three admitted reading other people's messages, checking out salary details and going over board-meeting minutes, according to Reuters.

Nearly half — 47 percent — said they'd accessed information that wasn't directly relevant to their jobs.

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"All you need is access to the right passwords or privileged accounts and you're privy to everything that's going on within your company," said Mark Fullbrook, U.K. director of Newton, Mass.-based security company Cyber-Ark, which conducted the survey of 300 IT professionals, in the report.

The report also found that 30 percent of administrator passwords are changed only every three months, while 9 percent are never changed at all.

"For most people, administrative passwords are a seemingly innocuous tool used by the IT department to update or amend systems," Fullbrook added. "To those 'in the know,' they are the keys to the kingdom."

• Click here for the rest of the story from Reuters.