
Recent developments have unearthed significant cryptographic vulnerabilities in several well-known end-to-end encrypted (E2EE) cloud storage services, raising urgent questions about the true security of these widely-used platforms. This startling revelation originates from an in-depth investigation led by Jonas Hofmann and Kien Tuong Truong of ETH Zurich. The researchers meticulously scrutinized five major E2EE platforms—Sync, pCloud, Icedrive, Seafile, and Tresorit, and