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This book constitutes the refereed proceedings of the Second International Symposium on Electronic Commerce, ISEC 2001, held in Hong Kong, China in April 2001.The eight revised full papers presented together with four short papers and two survey papers were carefully reviewed and selected for inclusion in the book. The book offers topical sections on secure payment, trust and security, tools for e-commerce applications, e-commerce frameworks and systems, performance and QoS, and e-commerce surveys.