Explore a groundbreaking presentation on the first practical cache covert channel in cloud environments. Discover how sensitive data can be secretly exfiltrated between fully isolated virtual machines on the same physical host, using regular user programs without privileges. Learn about this innovative technique presented by Michael Schwarz and Manuel Weber at Black Hat. Delve into the intricacies of SSH communication over robust cache covert channels, understanding the potential security implications for cloud infrastructure. Gain insights into cutting-edge research that challenges traditional notions of VM isolation and data security in cloud computing.