Andrew Nash is Senior Director of Identity Services at PayPal. He is a board member of the OpenID and Open Identity Exchange Foundations. Formerly he was CTO at Sonoa Systems and Reactivity working on XML and Web Services appliances. As Director of Technologies at RSA Security, Andrew worked on a wide range of identity systems. He is a known leader in PKI and Web-Services markets, has co-authored numerous Web Services security specifications and is author of a book on Public Key Infrastructure.