April 13, 2007 3:00 AM

Deleting embarrassing e-mails isn't easy, experts say

If Karl Rove or other White House staffers tried to delete sensitive e-mails from their computers, experts said, investigators Deleting a document or e-mail doesnt remove the file from a computers hard drive or a backup server. The only thing thats erased is the address known as a pointer indicating where the file is stored. Its like removing an index card in a library, said Robert Guinaugh, a senior partner at CyberControls LLC, a data forensic-support company in Barrington, Ill. You take the card out, but the book is still on the shelf.

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