This book constitutes the proceedings of the Workshops held in conjunction with the 45th International Conference on Computer Safety, Reliability, and Security, SAFECOMP 2026, which took place in Valencia, Spain, on September 22, 2026.The 58 papers included in this book were carefully reviewed and selected from a total of 84 submissions to the following eight workshops:CSRIS 2026 – First International Workshop on Cybersecure Supply Chains for Safe and Resilient Industrial SystemsDAIES 2026 – First International Workshop on Dependable AI in Embedded SystemsDECSoS 2026 – 21st International EWICS/ERCIM Workshop on Dependable Smart Embedded Cyber-Physical Systems and Systems-of-SystemsORCAS 2026 – First International Workshop on OverReliance on Cognitive AI Systems in Safety-Critical DomainsSafetyNXT 2026 – Second International Workshop on Disruptive Safety Challenges and ParadigmsSASSUR 2026 – 13th International Workshop on Next generation of System Assurance approaches for Critical SystemsSENSEI 2026 – Fifth International Workshop on Safety aNd SEcurity InteractionsWAISE 2026 – Ninth International Workshop on Artificial Intelligence Safety Engineering