Media giant Bertelsmann is putting a bit of money where its mouth is. It wants to zip lips, technologically speaking. It has begun encrypting the computer work, including some e-mails, of its high-level executives to give them an extra measure of safety. Interest in encryption is growing, but few companies are doing it to this extent.

Encryption is one way to bolster defenses against leaks and corporate espionage, says Tom Goschutz, chief technology officer for the company's corporate center. Encryption scrambles words and data so they can only be read by the proper parties, which have passwords used to unscramble the material.

At CNN.

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