Tyson Hartman is chief technology officer at Avanade, a global business technology services provider.

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Trefor Davies, chief technology officer of business-focused service provider Timico Limited, said high-profile data losses by government departments and banks in recent years showed information held by the state and private firms could not be regarded as totally secure.

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He was then an entrepreneur, a founder of Business Signatures and founding chief technology officer of Webvan Group, both of which were sold.

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