Banks' ability to retain their reputations as guardians of trust may depend on the evolving Internet concept of a "privacy architecture," said an International Business Machines Corp. information security expert.

Related to the more technical underpinning of a security architecture, which many corporations are building into their technology infrastructures, the privacy architecture would combine technology with a set of policies for handling and protecting sensitive personal data, said Mark Greene, IBM vice president of security, privacy, and trust.

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