This book constitutes the thoroughly refereed conference proceedings of the First International Workshop on Risk Assessment and Risk-driven Testing, RISK 2013, held in conjunction with 25th IFIP International Conference on Testing Software and Systems, ICTSS 2013, in Istanbul, Turkey, in November 2013. The revised full papers were carefully reviewed and selected from 13 submissions. The papers are organized in topical sections on risk analysis, risk modeling and risk-based testing.

This book constitutes the thoroughly refereed conference proceedings of the Fourth International Workshop on Risk Assessment and Risk-Driven Quality Assurance, RISK 2016, held in conjunction with ICTSS 2016, in Graz, Austria, in October 2016. The revised 9 full papers were carefully reviewed and selected from 11 submissions. They focus on research studying, developing and evaluating innovative techniques, tools, languages and methods risk assessment and risk-driven quality engineering. The papers are organized topical sections: security risk management; security risk analysis; risk-based testing.

This book constitutes the thoroughly refereed conference proceedings of the Third International Workshop on Risk Assessment and Risk-driven Testing, RISK 2015, held in conjunction with the OMG Technical Meeting in Berlin, Germany, in June 2015. The revised 8 full papers were carefully reviewed and selected from 12 submissions. This workshop addresses systematic approaches that combine risk assessment and testing. Also, the workshop was structured into the three sessions namely Risk Assessment, Risk and Development and Security Testing.