By Mary Brandel

When CIO Will Weider encouraged employees at Ministry Health Care and Affinity Health System in Wisconsin to use Facebook to spread the word about new programs and successful projects, he was surprised at the result: Few did so.

"Little pieces of information put together the big picture," Winkler says. Valuable tidbits include birth dates; the names of children, pets and best friends; facts about employers or comments about how projects at work are going; lists of hobbies; updates about vacations or life-changing events; and links to friends. The information is simple to find, either by using reconnaissance tools such as those available at sites like Maltego.com and Pipl.com or by simply doing searches on Facebook or LinkedIn.

"This stuff used to be under lock and key in a private diary," Gudaitis agrees. "The amount of disclosure on every level -- business dealings, trade secrets, classified information and personal information -- is enormously high." Also alarming, she says, are employees who tweet during meetings about what's happening and even who's in attendance.

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