The book "Trust and Trustworthy Computing" documents the refereed proceedings of the 8th International Conference on Trust and Trustworthy Computing, which took place in August 2015 in Heraklion, Crete. It includes a carefully selected collection of 15 full papers and 3 short contributions, chosen from a total of 42 submitted works. The contributions are organized into thematic sections that address various aspects of trust in computer technologies, including hardware-supported trusted execution, trust and users, trusted systems and services, trust and privacy, as well as fundamental building blocks for trust. Additionally, the book contains 7 two-page abstracts of poster contributions, which can be found in the appendix of the volume. This collection provides valuable insights into current research findings and developments in the field of trustworthy computing.