SlowMist has released an in-depth analysis of security risks associated with fingerprint browsers. These browsers often maintain their own app stores or distribute extensions via proprietary servers, with security heavily reliant on the vendor's capabilities. In the Electron architecture, the main process (Node.js environment) has full file system access to all local storage data in the browser environment. Some fingerprint browsers offer 'environment cloud sync' features, which may upload users' crypto wallet Vault files to the vendor's cloud servers if wallet extension data is included in backups.