Jeff Zhang, who publishes as ferstar, builds tools for agents and investigates how software behaves. His writing connects reverse engineering with questions about local execution, permissions and data leaving a machine.[1]
Start with Inside ZCode: Silently uploading your Git history to the cloud →
GitHub profile 
X · ferstar_org Contributions
The ZCode investigation begins with a large local archive and traces packaging and network behavior through logs and application code. It examines which workspace material was included and whether visible settings controlled the upload. Dated updates distinguish inspected versions from later company statements and releases. That version history matters: the article is evidence about the behavior and changes it documents, not a timeless assertion about every ZCode release.[3]
Ideas
Zhang’s profile README describes making existing software available through task-level tools, while carrying the user’s identity and permission limits into agent actions. His stated interests include audit trails, source-linked answers and operating-system controls on what an agent can read, execute or transmit.[2]
Tools, writing & talks
Writing, research & talks
Start here
Inside ZCode: Silently uploading your Git history to the cloudblog.ferstar.orgA versioned reverse-engineering investigation of workspace archives, upload behavior and later responses.
Read the dated updates first, then follow the archive, logs and code evidence. Familiarity with Git internals and desktop-app packaging helps; compare the inspected version with any version you actually use.
Author[3]Original source