Proceedings of the 13th European Workshop on Dependable Computing, EWDC '11, Pisa, Italy, May 11-12, 2011

Welcome to Pisa and to the 13th European Workshop on Dependable Computing! EWDC has a long tradition as a forum for discussing current and emerging research directions in the dependability area. It runs alternatively with the European Dependable Computing Conference, EDCC. After the first series, started in 1989 and held on a yearly basis until 2000, EWDC was recently revived with the 2009 edition in Toulouse. EWDC is organized around a specific theme, and this year it focused on resilience of evolving software systems. This is a challenging theme, especially considering that information systems are more and more composed of large, heterogeneous, evolving, networked systems and infrastructures. Issues of interoperability under levels of dependability guarantees, as well as efficient and scalable modeling and experimental techniques to assess the impact of accidental or malicious threats on dependability and security attributes, are among the crucial aspects to be addressed. The technical program includes 19 interesting papers, a few of which are joint work between academia and industry. They cover a good set of relevant aspects around the addressed theme; their presentation at the workshop will surely generate fruitful discussion and inspiration for research.