*7th ACM Cyber-Physical System Security Workshop (CPSS 2021)* held in conjunction with ACM AsiaCCS'21 Hong Kong, China, 7 June 2021 https://spritz.math.unipd.it/events/2021/CPSS *Important Dates* Submissions Due: January 27, 2021 AoE Notification: February 26, 2021 Camera-ready Due: March 15, 2021 The 7th ACM Cyber-Physical System Security Workshop will take place together with the 16th ACM ASIA Conference on Computer and Communications Security (ACM ASIACCS 2021). It will be held on June 7th, 2021. For more information: ACM ASIACCS 2021 https://asiaccs2021.comp.polyu.edu.hk *Call for Papers* Cyber-Physical Systems (CPS) of interest to this workshop consist of large-scale interconnected systems of heterogeneous components interacting with their physical environments. There exist a multitude of CPS devices and applications deployed to serve critical functions in our lives thus making security an important non-functional attribute of such systems. This workshop will provide a platform for professionals from academia, government, and industry to discuss novel ways to address the ever-present security challenges facing CPS. We seek submissions describing theoretical and practical solutions to security challenges in CPS. Submissions pertinent to the security of embedded systems, IoT, SCADA, smart grid, and other critical infrastructure are welcome. Topics of interest include, but are not limited to: Attack detection for CPS Authentication and access control for CPS Autonomous vehicle security Availability and auditing for CPS Blockchain for CPS security Data security and privacy for CPS Digital twins for CPS Embedded systems security Formal methods in CPS Industrial control system security IoT security Legacy CPS system protection Lightweight crypto and security Maritime cyber security Recovery from cyber attacks Security and risk assessment for CPS Security architectures for CPS Security by design for CPS Smart grid security Threat modeling for CPS Transportation system security Vulnerability analysis for CPS Wireless sensor network security *Submission and Final Preparation Instructions* Submitted papers must not substantially overlap papers that have been published or that are simultaneously submitted to a journal, workshop, or conference with proceedings. The review process is single-blinded, i.e., the papers should not be anonymized. Submissions must be in double-column ACM SIG Proceedings format <http://www.acm.org/sigs/publications/proceedings-templates>, and should not exceed 12 pages. We also welcome position papers describing work in progress, Systematization of Knowledge papers (distinguished with "SOK:" in the title), and papers describing novel testbeds. Only pdf files will be accepted. Authors of accepted papers must guarantee that their papers will be presented at the workshop. At least one author of the paper must be registered at the appropriate conference rate. Accepted papers will be published in the ACM Digital Library. There will also be a best paper award. *Program Chairs* Mauro Conti (University of Padua, Italy) Nils Ole Tippenhauer (CISPA, Germany) *Web Chair* Federico Turrin (University of Padua, Italy) * Publication Chair* Alessandro Brighente (University of Padua, Italy) *Program Committee* Ali Abbasi (Ruhr-University Bochum, Germany) Cristina Alcaraz (University of Malaga, Spain) Lejla Batina (Radboud University, Netherlands) Federica Battisti (University of Padua, Italy) Xiuzhen Cheng (George Washington University, USA) Yanick Fratantonio (CISCO Talos, Austria) Sokratis Katsikas (NTNU, Norway) Marina Krotofil (ABB, UK) Nicola Laurenti (University of Padua, Italy) Javier Lopez (University of Malaga, Spain) Mihalis Maniatakos (New York University Abu Dhabi, UAE) Daisuke Mashima (Advanced Digital Sciences Center, Singapore) Aditya Mathur (Singapore University of Technology and Design, Singapore) Martín Ochoa (AppGate Inc., Colombia) Federica Pascucci (Università degli Studi Roma Tre, Italy) Radha Poovendra (University of Washington, USA) Xi Qin (The University of Texas at Dallas, USA) Awais Rashid (University of Bristol, UK) Rodrigo Roman (University of Malaga, Spain) Martin Strohmeier (University of Oxford, UK) Johanna Ullrich (SBA Research, Austria) Chia-Mu Yu (National Chung Hsing University, Taiwan) Indrakshi Ray (Colorado State University, USA) Stefano Zanero (Politecnico di Milano, Italy) Sencun Zhu (The Pennsylvania State University, USA) Saman Zonouz (Rutgers University, USA) *Contact* Website: https://spritz.math.unipd.it/events/2021/CPSS E-mail: cpss21@easychair.org CPSS Home: http://jianying.space/cpss/