Because ChromeOS requires a Google Account login to sync data, a malicious build can easily log and steal your Google username and password.
Official Deployment Pipeline: [Google Cloud Servers] ➔ [Chromebook Recovery Utility] ➔ [Your USB Drive] ➔ [Safe Boot] ChromeOS Flex vs. Unofficial Legacy Images Unofficial Team MJY Build Official ChromeOS Flex None (Abandoned) Direct from Google Updates No updates Regular automatic updates File Format Unofficial .ISO Certified .BIN recovery image Security Highly vulnerable Sandboxed with verified boot Target Hardware Legacy 2010s hardware Modern or old PCs and Macs How to Properly Install ChromeOS Today