CLOUD S&P 2021 3rd Workshop on Cloud Security and Privacy, Kamakura, Japan, June 21-24, 2021. (Submissions due 20 March 2021) CLOUD S&P aims to provide a platform for researchers and practitioners to present and discuss a wide-range of security and privacy issues and their solutions to ensure better protection in a cloud ecosystem. This workshop invites submissions on new attacks and solutions on various cloud-centric technologies, as well as short surveys and case studies that shed light on the security implications of clouds. Topics of interest include, but are not limited to: * Access Control in Clouds * Virtual Network Security * Privacy-Enhanced Technologies for Clouds * Data Protection in Clouds * Trusted Computing in Clouds * Cloud Forensics * Cloud Security Auditing * Identity Management in Clouds * Risk Analysis for Clouds * SDN/NFV Security * Security and Privacy of Federated Clouds and Edge Computing * Security and Privacy of Fog Computing * Security and Privacy of Big Data For more information, please see http://cloudsp2021.encs.concordia.ca.